2025-12-28 06:49:19 +00:00
94 changed files with 1030 additions and 1495 deletions
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@ -1,2 +0,0 @@
-[alias]
-dev = ["run", "--", "dev"]
--- a/.editorconfig
+++ b/.editorconfig
@ -0,0 +1,7 @@
+root = true
+
+[*.rs]
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 4
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@ -1,16 +1,10 @@
-name: Check
+name: Rustlings Tests

 on:
  push:
    branches: [main]
-    paths-ignore:
-      - website
-      - '*.md'
  pull_request:
    branches: [main]
-    paths-ignore:
-      - website
-      - '*.md'

 env:
  CARGO_TERM_COLOR: always
@ -20,28 +14,30 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
-      - name: Clippy
-        run: cargo clippy -- --deny warnings
+      - run: cargo clippy -- --deny warnings
  fmt:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
-      - name: rustfmt
+      - uses: DavidAnson/markdownlint-cli2-action@v16
+        with:
+          globs: "exercises/**/*.md"
+      - name: Run cargo fmt
        run: cargo fmt --all --check
  test:
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
+        os: [ubuntu-latest, windows-latest, macOS-latest]
    steps:
      - uses: actions/checkout@v4
      - uses: swatinem/rust-cache@v2
-      - name: cargo test
+      - name: Run cargo test
        run: cargo test --workspace
  dev-check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: swatinem/rust-cache@v2
-      - name: rustlings dev check
-        run: cargo dev check --require-solutions
+      - name: Run rustlings dev check
+        run: cargo run -- dev check --require-solutions
--- a/.github/workflows/web.yml
+++ b/.github/workflows/web.yml
@ -0,0 +1,87 @@
+# Workflow to build your docs with oranda (and mdbook)
+# and deploy them to Github Pages
+name: Web
+
+# We're going to push to the gh-pages branch, so we need that permission
+permissions:
+  contents: write
+
+# What situations do we want to build docs in?
+# All of these work independently and can be removed / commented out
+# if you don't want oranda/mdbook running in that situation
+on:
+  # Check that a PR didn't break docs!
+  #
+  # Note that the "Deploy to Github Pages" step won't run in this mode,
+  # so this won't have any side-effects. But it will tell you if a PR
+  # completely broke oranda/mdbook. Sadly we don't provide previews (yet)!
+  pull_request:
+
+  # Whenever something gets pushed to main, update the docs!
+  # This is great for getting docs changes live without cutting a full release.
+  #
+  # Note that if you're using cargo-dist, this will "race" the Release workflow
+  # that actually builds the Github Release that oranda tries to read (and
+  # this will almost certainly complete first). As a result you will publish
+  # docs for the latest commit but the oranda landing page won't know about
+  # the latest release. The workflow_run trigger below will properly wait for
+  # cargo-dist, and so this half-published state will only last for ~10 minutes.
+  #
+  # If you only want docs to update with releases, disable this, or change it to
+  # a "release" branch. You can, of course, also manually trigger a workflow run
+  # when you want the docs to update.
+  push:
+    branches:
+      - main
+
+  # Whenever a workflow called "Release" completes, update the docs!
+  #
+  # If you're using cargo-dist, this is recommended, as it will ensure that
+  # oranda always sees the latest release right when it's available. Note
+  # however that Github's UI is wonky when you use workflow_run, and won't
+  # show this workflow as part of any commit. You have to go to the "actions"
+  # tab for your repo to see this one running (the gh-pages deploy will also
+  # only show up there).
+  workflow_run:
+    workflows: [ "Release" ]
+    types:
+      - completed
+
+# Alright, let's do it!
+jobs:
+  web:
+    name: Build and deploy site and docs
+    runs-on: ubuntu-latest
+    steps:
+      # Setup
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: swatinem/rust-cache@v2
+
+      # If you use any mdbook plugins, here's the place to install them!
+
+      # Install and run oranda (and mdbook)
+      # This will write all output to ./public/ (including copying mdbook's output to there)
+      - name: Install and run oranda
+        run: |
+          curl --proto '=https' --tlsv1.2 -LsSf https://github.com/axodotdev/oranda/releases/download/v0.3.1/oranda-installer.sh | sh
+          oranda build
+
+      # Deploy to our gh-pages branch (creating it if it doesn't exist)
+      # the "public" dir that oranda made above will become the root dir
+      # of this branch.
+      #
+      # Note that once the gh-pages branch exists, you must
+      # go into repo's settings > pages and set "deploy from branch: gh-pages"
+      # the other defaults work fine.
+      - name: Deploy to Github Pages
+        uses: JamesIves/github-pages-deploy-action@v4.4.1
+        # ONLY if we're on main (so no PRs or feature branches allowed!)
+        if: ${{ github.ref == 'refs/heads/main' }}
+        with:
+          branch: gh-pages
+          # Gotta tell the action where to find oranda's output
+          folder: public
+          token: ${{ secrets.GITHUB_TOKEN }}
+          single-commit: true
--- a/.github/workflows/website.yml
+++ b/.github/workflows/website.yml
@ -1,43 +0,0 @@
-name: Website
-
-on:
-  workflow_dispatch:
-  push:
-    branches: [main]
-    paths: [website]
-
-jobs:
-  build:
-    defaults:
-      run:
-        working-directory: website
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - name: Install TailwindCSS
-        run: npm install
-      - name: Build CSS
-        run: npx @tailwindcss/cli -m -i input.css -o static/main.css
-      - name: Download Zola
-        run: curl -fsSL https://github.com/getzola/zola/releases/download/v0.20.0/zola-v0.20.0-x86_64-unknown-linux-gnu.tar.gz | tar xz
-      - name: Build site
-        run: ./zola build
-      - name: Upload static files as artifact
-        uses: actions/upload-pages-artifact@v3
-        with:
-          path: website/public/
-
-  deploy:
-    needs: build
-    # Grant GITHUB_TOKEN the permissions required to make a Pages deployment
-    permissions:
-      pages: write    # to deploy to Pages
-      id-token: write # to verify the deployment originates from an appropriate source
-    # Deploy to the github-pages environment
-    environment:
-      name: github-pages
-      url: ${{ steps.deployment.outputs.page_url }}
-    runs-on: ubuntu-latest
-    steps:
-      - name: Deploy to GitHub Pages
-        uses: actions/deploy-pages@v4
--- a/.gitignore
+++ b/.gitignore
@ -6,6 +6,10 @@ Cargo.lock
 # State file
 .rustlings-state.txt

+# oranda
+public/
+.netlify
+
 # OS
 .DS_Store
 .direnv/
--- a/.markdownlint.yml
+++ b/.markdownlint.yml
@ -0,0 +1,2 @@
+# MD013/line-length Line length, Expected: 80
+MD013: false
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -1,27 +1,4 @@
-## Unreleased
-
-### Changed
-
- `vecs2`: Removed the use of `map` and `collect`, which are only taught later.
-
-## 6.5.0 (2025-08-21)
-
-### Added
-
- Check that Clippy is installed before initialization
-
-### Changed
-
- Upgrade to Rust edition 2024
- Raise the minimum supported Rust version to `1.88`
- Don't follow symlinks in the file watcher
- `dev new`: Don't add `.rustlings-state.txt` to `.gitignore`
-
-### Fixed
-
- Fix file links in VS Code
- Fix error printing when the progress bar is shown
- `dev check`: Don't check formatting if there are no solution files
+<a name="6.4.0"></a>

 ## 6.4.0 (2024-11-11)

@ -34,7 +11,7 @@
 - New option `x` in the prompt to reset the file of the current exercise 🔄
 - Allow `dead_code` for all exercises and solutions ⚰️ (thanks to [@huss4in](https://github.com/huss4in))
 - Pause input while running an exercise to avoid unexpected prompt interactions ⏸️
- Limit the maximum number of exercises to 999. Any community exercises willing to reach that limit? 🔝
+- Limit the maximum number of exercises to 999. Any third-party exercises willing to reach that limit? 🔝

 ### Changed

@ -52,6 +29,8 @@

 - Fix bad contrast in the list on terminals with a light theme.

+<a name="6.3.0"></a>
+
 ## 6.3.0 (2024-08-29)

 ### Added
@ -91,6 +70,8 @@
 - Fix the list when the terminal height is too low.
 - Restore the terminal after an error in the list.

+<a name="6.2.0"></a>
+
 ## 6.2.0 (2024-08-09)

 ### Added
@ -107,11 +88,13 @@
 - Run the final check of all exercises in parallel.
 - Small exercise improvements.

+<a name="6.1.0"></a>
+
 ## 6.1.0 (2024-07-10)

 #### Added

- `dev check`: Check that all exercises (including community ones) include at least one `TODO` comment.
+- `dev check`: Check that all exercises (including third-party ones) include at least one `TODO` comment.
 - `dev check`: Check that all exercises actually fail to run (not already solved).

 #### Changed
@ -124,11 +107,15 @@
 - Exit with a helpful error message on missing/unsupported terminal/TTY.
 - Mark the last exercise as done.

+<a name="6.0.1"></a>
+
 ## 6.0.1 (2024-07-04)

 Small exercise improvements and fixes.
 Most importantly, fixed that the exercise `clippy1` was already solved 😅

+<a name="6.0.0"></a>
+
 ## 6.0.0 (2024-07-03)

 This release is the result of a complete rewrite to deliver a ton of new features and improvements ✨
@ -186,13 +173,15 @@ This should avoid issues related to the language server or to running exercises,
 Clippy lints are now shown on all exercises, not only the Clippy exercises 📎
 Make Clippy your friend from early on 🥰

-### Community Exercises
+### Third-party exercises

-Rustlings now supports community exercises!
+Rustlings now supports third-party exercises!

 Do you want to create your own set of Rustlings exercises to focus on some specific topic?
 Or do you want to translate the original Rustlings exercises?
-Then follow the link to the guide about [community exercises](https://rustlings.rust-lang.org/community-exercises)!
+Then follow the link to the guide about [third-party exercises](THIRD_PARTY_EXERCISES.md)!
+
+<a name="5.6.1"></a>

 ## 5.6.1 (2023-09-18)

@ -209,6 +198,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - `as_ref_mut`: Fixed a typo in a test function name.
 - `enums3`: Fixed formatting with `rustfmt`.

+<a name="5.6.0"></a>
+
 ## 5.6.0 (2023-09-04)

 #### Added
@ -248,12 +239,16 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Lots of Nix housekeeping that I don't feel qualified to write about!
 - Improved CI workflows, we're now testing on multiple platforms at once.

+<a name="5.5.1"></a>
+
 ## 5.5.1 (2023-05-17)

 #### Fixed

 - Reverted `rust-project.json` path generation due to an upstream `rust-analyzer` fix.

+<a name="5.5.0"></a>
+
 ## 5.5.0 (2023-05-17)

 #### Added
@ -288,6 +283,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Added a markdown linter to run on GitHub actions
 - Split quick installation section into two code blocks

+<a name="5.4.1"></a>
+
 ## 5.4.1 (2023-03-10)

 #### Changed
@ -303,6 +300,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - `macros4`: Prevented auto-fix by adding `#[rustfmt::skip]`
 - `cli`: Actually show correct progress percentages

+<a name="5.4.0"></a>
+
 ## 5.4.0 (2023-02-12)

 #### Changed
@ -331,6 +330,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.

 - Bumped min Rust version to 1.58 in installation script

+<a name="5.3.0"></a>
+
 ## 5.3.0 (2022-12-23)

 #### Added
@ -363,6 +364,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Applied some Clippy and rustfmt formatting
 - Added a note on Windows PowerShell and other shell compatibility

+<a name="5.2.1"></a>
+
 ## 5.2.1 (2022-09-06)

 #### Fixed
@ -376,6 +379,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.

 - Fixed a typo in README.md

+<a name="5.2.0"></a>
+
 ## 5.2.0 (2022-08-27)

 #### Added
@ -392,12 +397,16 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - **quiz1**: Adjusted the explanations to be consistent with
  the tests

+<a name="5.1.1"></a>
+
 ## 5.1.1 (2022-08-17)

 #### Bug Fixes

 - Fixed an incorrect assertion in options1

+<a name="5.1.0"></a>
+
 ## 5.1.0 (2022-08-16)

 #### Features
@ -432,6 +441,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Clarified manual installation instructions using `cargo install --path .`
 - Added a link to our Zulip in the readme file

+<a name="5.0.0"></a>
+
 ## 5.0.0 (2022-07-16)

 #### Features
@ -504,6 +515,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Updated spacing in Cargo.toml.
 - Added a GitHub actions config so that tests run on every PR/commit.

+<a name="4.8.0"></a>
+
 ## 4.8.0 (2022-07-01)

 #### Features
@ -524,6 +537,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Replaced the git.io URL with the fully qualified URL because of git.io's sunsetting.
 - Removed the deprecated Rust GitPod extension.

+<a name="4.7.1"></a>
+
 ## 4.7.1 (2022-04-20)

 #### Features
@ -544,6 +559,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - The changelog will now be manually written instead of being automatically generated by the
  Git log.

+<a name="4.7.0"></a>
+
 ## 4.7.0 (2022-04-14)

 #### Features
@ -584,6 +601,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Add hints on how to get GCC installed (#741) ([bc56861](https://github.com/rust-lang/rustlings/commit/bc5686174463ad6f4f6b824b0e9b97c3039d4886))
 - Fix some code blocks that were not highlighted ([17f9d74](https://github.com/rust-lang/rustlings/commit/17f9d7429ccd133a72e815fb5618e0ce79560929))

+<a name="4.6.0"></a>
+
 ## 4.6.0 (2021-09-25)

 #### Features
@ -606,6 +625,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
  - Clarify instructions ([df25684c](https://github.com/rust-lang/rustlings/commit/df25684cb79f8413915e00b5efef29369849cef1))
 - **quiz1:** Fix inconsistent wording (#826) ([03131a3d](https://github.com/rust-lang/rustlings/commit/03131a3d35d9842598150f9da817f7cc26e2669a))

+<a name="4.5.0"></a>
+
 ## 4.5.0 (2021-07-07)

 #### Features
@ -626,6 +647,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - **try_from_into, from_str:** hints for dyn Error ([11d2cf0d](https://github.com/rust-lang/rustlings/commit/11d2cf0d604dee3f5023c17802d69438e69fa50e))
 - **variables5:** confine the answer further ([48ffcbd2](https://github.com/rust-lang/rustlings/commit/48ffcbd2c4cc4d936c2c7480019190f179813cc5))

+<a name="4.4.0"></a>
+
 ## 4.4.0 (2021-04-24)

 #### Bug Fixes
@ -667,6 +690,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
  - updated progress percentage ([1c6f7e4b](https://github.com/rust-lang/rustlings/commit/1c6f7e4b7b9b3bd36f4da2bb2b69c549cc8bd913))
  - added progress info ([c0e3daac](https://github.com/rust-lang/rustlings/commit/c0e3daacaf6850811df5bc57fa43e0f249d5cfa4))

+<a name="4.3.0"></a>
+
 ## 4.3.0 (2020-12-29)

 #### Features
@ -689,6 +714,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
  - Update description (#584) ([96347df9](https://github.com/rust-lang/rustlings/commit/96347df9df294f01153b29d9ad4ba361f665c755))
 - **vec1:** Have test compare every element in a and v ([9b6c6293](https://github.com/rust-lang/rustlings/commit/9b6c629397b24b944f484f5b2bbd8144266b5695))

+<a name="4.2.0"></a>
+
 ## 4.2.0 (2020-11-07)

 #### Features
@ -709,6 +736,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
  - missing comma in test ([4fb230da](https://github.com/rust-lang/rustlings/commit/4fb230daf1251444fcf29e085cee222a91f8a37e))
 - **quiz3:** Second test is for odd numbers, not even. (#553) ([18e0bfef](https://github.com/rust-lang/rustlings/commit/18e0bfef1de53071e353ba1ec5837002ff7290e6))

+<a name="4.1.0"></a>
+
 ## 4.1.0 (2020-10-05)

 #### Bug Fixes
@ -731,6 +760,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - **cli:** Added 'cls' command to 'watch' mode (#474) ([4f2468e1](https://github.com/rust-lang/rustlings/commit/4f2468e14f574a93a2e9b688367b5752ed96ae7b))
 - **try_from_into:** Add insufficient length test (#469) ([523d18b8](https://github.com/rust-lang/rustlings/commit/523d18b873a319f7c09262f44bd40e2fab1830e5))

+<a name="4.0.0"></a>
+
 ## 4.0.0 (2020-07-08)

 #### Breaking Changes
@ -772,6 +803,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - **test2:** name of type String and &str (#394) ([d6c0a688](https://github.com/rust-lang/rustlings/commit/d6c0a688e6a96f93ad60d540d4b326f342fc0d45))
 - **variables6:** minor typo (#419) ([524e17df](https://github.com/rust-lang/rustlings/commit/524e17df10db95f7b90a0f75cc8997182a8a4094))

+<a name="3.0.0"></a>
+
 ## 3.0.0 (2020-04-11)

 #### Breaking Changes
@ -794,6 +827,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - add new exercises for generics (#280) ([76be5e4e](https://github.com/rust-lang/rustlings/commit/76be5e4e991160f5fd9093f03ee2ba260e8f7229))
 - **ci:** add buildkite config ([b049fa2c](https://github.com/rust-lang/rustlings/commit/b049fa2c84dba0f0c8906ac44e28fd45fba51a71))

+<a name="2.2.1"></a>
+
 ### 2.2.1 (2020-02-27)

 #### Bug Fixes
@ -804,6 +839,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.

 - Add clippy lints (#269) ([1e2fd9c9](https://github.com/rust-lang/rustlings/commit/1e2fd9c92f8cd6e389525ca1a999fca4c90b5921))

+<a name="2.2.0"></a>
+
 ## 2.2.0 (2020-02-25)

 #### Bug Fixes
@ -831,6 +868,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Added traits exercises (#274 but specifically #216, which originally added
  this :heart:) ([b559cdd](https://github.com/rust-lang/rustlings/commit/b559cdd73f32c0d0cfc1feda39f82b3e3583df17))

+<a name="2.1.0"></a>
+
 ## 2.1.0 (2019-11-27)

 #### Bug Fixes
@ -848,6 +887,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.

 - **watch:** show hint while watching ([8143d57b](https://github.com/rust-lang/rustlings/commit/8143d57b4e88c51341dd4a18a14c536042cc009c))

+<a name="2.0.0"></a>
+
 ## 2.0.0 (2019-11-12)

 #### Bug Fixes
@ -868,6 +909,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - **cli:** check for rustc before doing anything ([36a033b8](https://github.com/rust-lang/rustlings/commit/36a033b87a6549c1e5639c908bf7381c84f4f425))
 - **hint:** Add test for hint ([ce9fa6eb](https://github.com/rust-lang/rustlings/commit/ce9fa6ebbfdc3e7585d488d9409797285708316f))

+<a name="1.5.1"></a>
+
 ### 1.5.1 (2019-11-11)

 #### Bug Fixes
@ -879,6 +922,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - **threads:** Move Threads behind SLT ([fbe91a67](https://github.com/rust-lang/rustlings/commit/fbe91a67a482bfe64cbcdd58d06ba830a0f39da3), closes [#205](https://github.com/rust-lang/rustlings/issues/205))
 - **watch:** clear screen before each `verify()` ([3aff590](https://github.com/rust-lang/rustlings/commit/3aff59085586c24196a547c2693adbdcf4432648))

+<a name="1.5.0"></a>
+
 ## 1.5.0 (2019-11-09)

 #### Bug Fixes
@ -903,6 +948,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Added exercise for struct update syntax ([1c4c8764](https://github.com/rust-lang/rustlings/commit/1c4c8764ed118740cd4cee73272ddc6cceb9d959))
 - **iterators2:** adds iterators2 exercise including config ([9288fccf](https://github.com/rust-lang/rustlings/commit/9288fccf07a2c5043b76d0fd6491e4cf72d76031))

+<a name="1.4.1"></a>
+
 ### 1.4.1 (2019-08-13)

 #### Bug Fixes
@ -911,6 +958,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - **option1:** Add test for prematurely passing exercise ([a750e4a1](https://github.com/rust-lang/rustlings/commit/a750e4a1a3006227292bb17d57d78ce84da6bfc6))
 - **test1:** Swap assertion parameter order ([4086d463](https://github.com/rust-lang/rustlings/commit/4086d463a981e81d97781851d17db2ced290f446))

+<a name="1.4.0"></a>
+
 ## 1.4.0 (2019-07-13)

 #### Bug Fixes
@ -927,6 +976,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - **changelog:** Use clog for changelogs ([34e31232](https://github.com/rust-lang/rustlings/commit/34e31232dfddde284a341c9609b33cd27d9d5724))
 - **iterators2:** adds iterators2 exercise including config ([9288fccf](https://github.com/rust-lang/rustlings/commit/9288fccf07a2c5043b76d0fd6491e4cf72d76031))

+<a name="1.3.0"></a>
+
 ### 1.3.0 (2019-06-05)

 #### Features
@ -942,12 +993,16 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Fix broken link (#164, @HanKruiger)
 - Remove highlighting and syntect (#167, @komaeda)

+<a name="1.2.2"></a>
+
 ### 1.2.2 (2019-05-07)

 #### Bug Fixes

 - Reverted `--nocapture` flag since it was causing tests to pass unconditionally

+<a name="1.2.1"></a>
+
 ### 1.2.1 (2019-04-22)

 #### Bug Fixes
@ -955,6 +1010,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Fix the `--nocapture` feature (@komaeda)
 - Provide a nicer error message for when you're in the wrong directory

+<a name="1.2.0"></a>
+
 ### 1.2.0 (2019-04-22)

 #### Features
@ -962,6 +1019,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Add errors to exercises that compile without user changes (@yvan-sraka)
 - Use --nocapture when testing, enabling `println!` when running (@komaeda)

+<a name="1.1.1"></a>
+
 ### 1.1.1 (2019-04-14)

 #### Bug fixes
@ -974,6 +1033,8 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Fix links by deleting book version (@diodfr, #142)
 - Canonicalize paths to fix path matching (@cjpearce, #143)

+<a name="1.1.0"></a>
+
 ### 1.1.0 (2019-03-20)

 - errors2.rs: update link to Rust book (#124)
@ -983,12 +1044,16 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Give a warning when Rustlings isn't run from the right directory (#123)
 - Verify that rust version is recent enough to install Rustlings (#131)

+<a name="1.0.1"></a>
+
 ### 1.0.1 (2019-03-06)

 - Adds a way to install Rustlings in one command (`curl -L https://git.io/rustlings | bash`)
 - Makes `rustlings watch` react to create file events (@shaunbennett, #117)
 - Reworks the exercise management to use an external TOML file instead of just listing them in the code

+<a name="1.0.0"></a>
+
 ### 1.0.0 (2019-03-06)

 Initial release.
--- a/Cargo.lock
+++ b/Cargo.lock
@ -1,12 +1,12 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 4
+version = 3

 [[package]]
 name = "anstream"
-version = "0.6.20"
+version = "0.6.18"
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-checksum = "3ae563653d1938f79b1ab1b5e668c87c76a9930414574a6583a7b7e11a8e6192"
+checksum = "8acc5369981196006228e28809f761875c0327210a891e941f4c683b3a99529b"
 dependencies = [
 "anstyle",
 "anstyle-parse",
@ -19,50 +19,49 @@ dependencies = [

 [[package]]
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-version = "1.0.11"
+version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "862ed96ca487e809f1c8e5a8447f6ee2cf102f846893800b20cebdf541fc6bbd"
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 [[package]]
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-checksum = "4e7644824f0aa2c7b9384579234ef10eb7efb6a0deb83f9630a49594dd9c15c2"
+checksum = "3b2d16507662817a6a20a9ea92df6652ee4f94f914589377d69f3b21bc5798a9"
 dependencies = [
 "utf8parse",
 ]

 [[package]]
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 dependencies = [
- "windows-sys 0.60.2",
+ "windows-sys 0.59.0",
 ]

 [[package]]
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+version = "3.0.6"
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-checksum = "3e0633414522a32ffaac8ac6cc8f748e090c5717661fddeea04219e2344f5f2a"
+checksum = "2109dbce0e72be3ec00bed26e6a7479ca384ad226efdd66db8fa2e3a38c83125"
 dependencies = [
 "anstyle",
- "once_cell_polyfill",
- "windows-sys 0.60.2",
+ "windows-sys 0.59.0",
 ]

 [[package]]
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-version = "1.0.99"
+version = "1.0.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0674a1ddeecb70197781e945de4b3b8ffb61fa939a5597bcf48503737663100"
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 [[package]]
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-version = "1.5.0"
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-checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8"
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 [[package]]
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@ -72,21 +71,21 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"

 [[package]]
 name = "bitflags"
-version = "2.9.2"
+version = "2.6.0"
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-checksum = "6a65b545ab31d687cff52899d4890855fec459eb6afe0da6417b8a18da87aa29"
+checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"

 [[package]]
 name = "cfg-if"
-version = "1.0.3"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2fd1289c04a9ea8cb22300a459a72a385d7c73d3259e2ed7dcb2af674838cfa9"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"

 [[package]]
 name = "clap"
-version = "4.5.45"
+version = "4.5.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fc0e74a703892159f5ae7d3aac52c8e6c392f5ae5f359c70b5881d60aaac318"
+checksum = "b97f376d85a664d5837dbae44bf546e6477a679ff6610010f17276f686d867e8"
 dependencies = [
 "clap_builder",
 "clap_derive",
@ -94,9 +93,9 @@ dependencies = [

 [[package]]
 name = "clap_builder"
-version = "4.5.44"
+version = "4.5.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b3e7f4214277f3c7aa526a59dd3fbe306a370daee1f8b7b8c987069cd8e888a8"
+checksum = "19bc80abd44e4bed93ca373a0704ccbd1b710dc5749406201bb018272808dc54"
 dependencies = [
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 "anstyle",
@ -106,9 +105,9 @@ dependencies = [

 [[package]]
 name = "clap_derive"
-version = "4.5.45"
+version = "4.5.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14cb31bb0a7d536caef2639baa7fad459e15c3144efefa6dbd1c84562c4739f6"
+checksum = "4ac6a0c7b1a9e9a5186361f67dfa1b88213572f427fb9ab038efb2bd8c582dab"
 dependencies = [
 "heck",
 "proc-macro2",
@ -118,25 +117,24 @@ dependencies = [

 [[package]]
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-version = "0.7.5"
+version = "0.7.2"
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-checksum = "b94f61472cee1439c0b966b47e3aca9ae07e45d070759512cd390ea2bebc6675"
+checksum = "1462739cb27611015575c0c11df5df7601141071f07518d56fcc1be504cbec97"

 [[package]]
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-version = "1.0.4"
+version = "1.0.3"
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-checksum = "b05b61dc5112cbb17e4b6cd61790d9845d13888356391624cbe7e41efeac1e75"
+checksum = "5b63caa9aa9397e2d9480a9b13673856c78d8ac123288526c37d7839f2a86990"

 [[package]]
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-version = "0.29.0"
+version = "0.28.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d8b9f2e4c67f833b660cdb0a3523065869fb35570177239812ed4c905aeff87b"
+checksum = "829d955a0bb380ef178a640b91779e3987da38c9aea133b20614cfed8cdea9c6"
 dependencies = [
- "bitflags 2.9.2",
+ "bitflags 2.6.0",
 "crossterm_winapi",
- "document-features",
 "mio",
 "parking_lot",
 "rustix",
@ -154,36 +152,39 @@ dependencies = [
 "winapi",
 ]

-[[package]]
-name = "document-features"
-version = "0.2.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95249b50c6c185bee49034bcb378a49dc2b5dff0be90ff6616d31d64febab05d"
-dependencies = [
- "litrs",
-]
-
 [[package]]
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-version = "1.0.2"
+version = "1.0.1"
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-checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
+checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"

 [[package]]
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-version = "0.3.13"
+version = "0.3.9"
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-checksum = "778e2ac28f6c47af28e4907f13ffd1e1ddbd400980a9abd7c8df189bf578a5ad"
+checksum = "534c5cf6194dfab3db3242765c03bbe257cf92f22b38f6bc0c58d59108a820ba"
 dependencies = [
 "libc",
- "windows-sys 0.60.2",
+ "windows-sys 0.52.0",
 ]

 [[package]]
 name = "fastrand"
-version = "2.3.0"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
+checksum = "486f806e73c5707928240ddc295403b1b93c96a02038563881c4a2fd84b81ac4"
+
+[[package]]
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+version = "0.2.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35c0522e981e68cbfa8c3f978441a5f34b30b96e146b33cd3359176b50fe8586"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "libredox",
+ "windows-sys 0.59.0",
+]

 [[package]]
 name = "fsevent-sys"
@ -194,23 +195,11 @@ dependencies = [
 "libc",
 ]

-[[package]]
-name = "getrandom"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26145e563e54f2cadc477553f1ec5ee650b00862f0a58bcd12cbdc5f0ea2d2f4"
-dependencies = [
- "cfg-if",
- "libc",
- "r-efi",
- "wasi 0.14.2+wasi-0.2.4",
-]
-
 [[package]]
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-version = "0.15.5"
+version = "0.15.1"
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-checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
+checksum = "3a9bfc1af68b1726ea47d3d5109de126281def866b33970e10fbab11b5dafab3"

 [[package]]
 name = "heck"
@ -219,10 +208,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"

 [[package]]
-name = "indexmap"
-version = "2.10.0"
+name = "hermit-abi"
+version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fe4cd85333e22411419a0bcae1297d25e58c9443848b11dc6a86fefe8c78a661"
+checksum = "d231dfb89cfffdbc30e7fc41579ed6066ad03abda9e567ccafae602b97ec5024"
+
+[[package]]
+name = "indexmap"
+version = "2.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "707907fe3c25f5424cce2cb7e1cbcafee6bdbe735ca90ef77c29e84591e5b9da"
 dependencies = [
 "equivalent",
 "hashbrown",
@ -230,11 +225,11 @@ dependencies = [

 [[package]]
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-version = "0.11.0"
+version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f37dccff2791ab604f9babef0ba14fbe0be30bd368dc541e2b08d07c8aa908f3"
+checksum = "fdd168d97690d0b8c412d6b6c10360277f4d7ee495c5d0d5d5fe0854923255cc"
 dependencies = [
- "bitflags 2.9.2",
+ "bitflags 1.3.2",
 "inotify-sys",
 "libc",
 ]
@ -248,6 +243,15 @@ dependencies = [
 "libc",
 ]

+[[package]]
+name = "instant"
+version = "0.1.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e0242819d153cba4b4b05a5a8f2a7e9bbf97b6055b2a002b395c96b5ff3c0222"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "is_terminal_polyfill"
 version = "1.70.1"
@ -256,15 +260,15 @@ checksum = "7943c866cc5cd64cbc25b2e01621d07fa8eb2a1a23160ee81ce38704e97b8ecf"

 [[package]]
 name = "itoa"
-version = "1.0.15"
+version = "1.0.11"
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-checksum = "4a5f13b858c8d314ee3e8f639011f7ccefe71f97f96e50151fb991f267928e2c"
+checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"

 [[package]]
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-version = "1.1.1"
+version = "1.0.8"
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-checksum = "eac30106d7dce88daf4a3fcb4879ea939476d5074a9b7ddd0fb97fa4bed5596a"
+checksum = "7447f1ca1b7b563588a205fe93dea8df60fd981423a768bc1c0ded35ed147d0c"
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 "libc",
@ -282,27 +286,32 @@ dependencies = [

 [[package]]
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-version = "0.2.175"
+version = "0.2.162"
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+checksum = "18d287de67fe55fd7e1581fe933d965a5a9477b38e949cfa9f8574ef01506398"
+
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+checksum = "c0ff37bd590ca25063e35af745c343cb7a0271906fb7b37e4813e8f79f00268d"
+dependencies = [
+ "bitflags 2.6.0",
+ "libc",
+ "redox_syscall",
+]

 [[package]]
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-version = "0.9.4"
+version = "0.4.14"
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+checksum = "78b3ae25bc7c8c38cec158d1f2757ee79e9b3740fbc7ccf0e59e4b08d793fa89"

 [[package]]
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-version = "0.4.13"
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 dependencies = [
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 "scopeguard",
@ -310,35 +319,37 @@ dependencies = [

 [[package]]
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+version = "0.4.22"
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 [[package]]
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 [[package]]
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-checksum = "78bed444cc8a2160f01cbcf811ef18cac863ad68ae8ca62092e8db51d51c761c"
+checksum = "80e04d1dcff3aae0704555fe5fee3bcfaf3d1fdf8a7e521d5b9d2b42acb52cec"
 dependencies = [
+ "hermit-abi",
 "libc",
 "log",
- "wasi 0.11.1+wasi-snapshot-preview1",
- "windows-sys 0.59.0",
+ "wasi",
+ "windows-sys 0.52.0",
 ]

 [[package]]
 name = "notify"
-version = "8.2.0"
+version = "7.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4d3d07927151ff8575b7087f245456e549fea62edf0ec4e565a5ee50c8402bc3"
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 dependencies = [
- "bitflags 2.9.2",
+ "bitflags 2.6.0",
+ "filetime",
 "fsevent-sys",
 "inotify",
 "kqueue",
@ -347,32 +358,39 @@ dependencies = [
 "mio",
 "notify-types",
 "walkdir",
- "windows-sys 0.60.2",
+ "windows-sys 0.52.0",
 ]

 [[package]]
 name = "notify-types"
-version = "2.0.0"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5e0826a989adedc2a244799e823aece04662b66609d96af8dff7ac6df9a8925d"
+checksum = "7393c226621f817964ffb3dc5704f9509e107a8b024b489cc2c1b217378785df"
+dependencies = [
+ "instant",
+]

 [[package]]
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+version = "1.20.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
+checksum = "1261fe7e33c73b354eab43b1273a57c8f967d0391e80353e51f764ac02cf6775"

 [[package]]
-name = "once_cell_polyfill"
-version = "1.70.1"
+name = "os_pipe"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4895175b425cb1f87721b59f0f286c2092bd4af812243672510e1ac53e2e0ad"
+checksum = "5ffd2b0a5634335b135d5728d84c5e0fd726954b87111f7506a61c502280d982"
+dependencies = [
+ "libc",
+ "windows-sys 0.59.0",
+]

 [[package]]
 name = "parking_lot"
-version = "0.12.4"
+version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "70d58bf43669b5795d1576d0641cfb6fbb2057bf629506267a92807158584a13"
+checksum = "f1bf18183cf54e8d6059647fc3063646a1801cf30896933ec2311622cc4b9a27"
 dependencies = [
 "lock_api",
 "parking_lot_core",
@ -380,93 +398,88 @@ dependencies = [

 [[package]]
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-version = "0.9.11"
+version = "0.9.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc838d2a56b5b1a6c25f55575dfc605fabb63bb2365f6c2353ef9159aa69e4a5"
+checksum = "1e401f977ab385c9e4e3ab30627d6f26d00e2c73eef317493c4ec6d468726cf8"
 dependencies = [
 "cfg-if",
 "libc",
 "redox_syscall",
 "smallvec",
- "windows-targets 0.52.6",
+ "windows-targets",
 ]

 [[package]]
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 dependencies = [
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 ]

 [[package]]
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+checksum = "b5b9d34b8991d19d98081b46eacdd8eb58c6f2b201139f7c5f643cc155a633af"
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-[[package]]
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-
 [[package]]
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 dependencies = [
- "bitflags 2.9.2",
+ "bitflags 2.6.0",
 ]

 [[package]]
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 dependencies = [
- "bitflags 2.9.2",
+ "bitflags 2.6.0",
 "errno",
 "libc",
 "linux-raw-sys",
- "windows-sys 0.60.2",
+ "windows-sys 0.52.0",
 ]

 [[package]]
 name = "rustlings"
-version = "6.5.0"
+version = "6.4.0"
 dependencies = [
 "anyhow",
 "clap",
 "crossterm",
 "notify",
+ "os_pipe",
 "rustix",
 "rustlings-macros",
 "serde",
 "serde_json",
 "tempfile",
- "toml",
+ "toml_edit",
 ]

 [[package]]
 name = "rustlings-macros"
-version = "6.5.0"
+version = "6.4.0"
 dependencies = [
 "quote",
 "serde",
- "toml",
+ "toml_edit",
 ]

 [[package]]
 name = "ryu"
-version = "1.0.20"
+version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "28d3b2b1366ec20994f1fd18c3c594f05c5dd4bc44d8bb0c1c632c8d6829481f"
+checksum = "f3cb5ba0dc43242ce17de99c180e96db90b235b8a9fdc9543c96d2209116bd9f"

 [[package]]
 name = "same-file"
@ -485,18 +498,18 @@ checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"

 [[package]]
 name = "serde"
-version = "1.0.219"
+version = "1.0.214"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f0e2c6ed6606019b4e29e69dbaba95b11854410e5347d525002456dbbb786b6"
+checksum = "f55c3193aca71c12ad7890f1785d2b73e1b9f63a0bbc353c08ef26fe03fc56b5"
 dependencies = [
 "serde_derive",
 ]

 [[package]]
 name = "serde_derive"
-version = "1.0.219"
+version = "1.0.214"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b0276cf7f2c73365f7157c8123c21cd9a50fbbd844757af28ca1f5925fc2a00"
+checksum = "de523f781f095e28fa605cdce0f8307e451cc0fd14e2eb4cd2e98a355b147766"
 dependencies = [
 "proc-macro2",
 "quote",
@ -505,9 +518,9 @@ dependencies = [

 [[package]]
 name = "serde_json"
-version = "1.0.143"
+version = "1.0.132"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d401abef1d108fbd9cbaebc3e46611f4b1021f714a0597a71f41ee463f5f4a5a"
+checksum = "d726bfaff4b320266d395898905d0eba0345aae23b54aee3a737e260fd46db03"
 dependencies = [
 "itoa",
 "memchr",
@ -517,18 +530,18 @@ dependencies = [

 [[package]]
 name = "serde_spanned"
-version = "1.0.0"
+version = "0.6.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "40734c41988f7306bb04f0ecf60ec0f3f1caa34290e4e8ea471dcd3346483b83"
+checksum = "87607cb1398ed59d48732e575a4c28a7a8ebf2454b964fe3f224f2afc07909e1"
 dependencies = [
 "serde",
 ]

 [[package]]
 name = "signal-hook"
-version = "0.3.18"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d881a16cf4426aa584979d30bd82cb33429027e42122b169753d6ef1085ed6e2"
+checksum = "8621587d4798caf8eb44879d42e56b9a93ea5dcd315a6487c357130095b62801"
 dependencies = [
 "libc",
 "signal-hook-registry",
@ -547,18 +560,18 @@ dependencies = [

 [[package]]
 name = "signal-hook-registry"
-version = "1.4.6"
+version = "1.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2a4719bff48cee6b39d12c020eeb490953ad2443b7055bd0b21fca26bd8c28b"
+checksum = "a9e9e0b4211b72e7b8b6e85c807d36c212bdb33ea8587f7569562a84df5465b1"
 dependencies = [
 "libc",
 ]

 [[package]]
 name = "smallvec"
-version = "1.15.1"
+version = "1.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67b1b7a3b5fe4f1376887184045fcf45c69e92af734b7aaddc05fb777b6fbd03"
+checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67"

 [[package]]
 name = "strsim"
@ -568,9 +581,9 @@ checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"

 [[package]]
 name = "syn"
-version = "2.0.106"
+version = "2.0.87"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ede7c438028d4436d71104916910f5bb611972c5cfd7f89b8300a8186e6fada6"
+checksum = "25aa4ce346d03a6dcd68dd8b4010bcb74e54e62c90c573f394c46eae99aba32d"
 dependencies = [
 "proc-macro2",
 "quote",
@ -579,61 +592,44 @@ dependencies = [

 [[package]]
 name = "tempfile"
-version = "3.21.0"
+version = "3.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "15b61f8f20e3a6f7e0649d825294eaf317edce30f82cf6026e7e4cb9222a7d1e"
+checksum = "28cce251fcbc87fac86a866eeb0d6c2d536fc16d06f184bb61aeae11aa4cee0c"
 dependencies = [
+ "cfg-if",
 "fastrand",
- "getrandom",
 "once_cell",
 "rustix",
- "windows-sys 0.60.2",
+ "windows-sys 0.59.0",
 ]

 [[package]]
-name = "toml"
-version = "0.9.5"
+name = "toml_datetime"
+version = "0.6.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "75129e1dc5000bfbaa9fee9d1b21f974f9fbad9daec557a521ee6e080825f6e8"
+checksum = "0dd7358ecb8fc2f8d014bf86f6f638ce72ba252a2c3a2572f2a795f1d23efb41"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "toml_edit"
+version = "0.22.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ae48d6208a266e853d946088ed816055e556cc6028c5e8e2b84d9fa5dd7c7f5"
 dependencies = [
 "indexmap",
 "serde",
 "serde_spanned",
 "toml_datetime",
- "toml_parser",
- "toml_writer",
 "winnow",
 ]

-[[package]]
-name = "toml_datetime"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bade1c3e902f58d73d3f294cd7f20391c1cb2fbcb643b73566bc773971df91e3"
-dependencies = [
- "serde",
-]
-
-[[package]]
-name = "toml_parser"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b551886f449aa90d4fe2bdaa9f4a2577ad2dde302c61ecf262d80b116db95c10"
-dependencies = [
- "winnow",
-]
-
-[[package]]
-name = "toml_writer"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcc842091f2def52017664b53082ecbbeb5c7731092bad69d2c63050401dfd64"
-
 [[package]]
 name = "unicode-ident"
-version = "1.0.18"
+version = "1.0.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a5f39404a5da50712a4c1eecf25e90dd62b613502b7e925fd4e4d19b5c96512"
+checksum = "e91b56cd4cadaeb79bbf1a5645f6b4f8dc5bde8834ad5894a8db35fda9efa1fe"

 [[package]]
 name = "utf8parse"
@ -653,18 +649,9 @@ dependencies = [

 [[package]]
 name = "wasi"
-version = "0.11.1+wasi-snapshot-preview1"
+version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
-
-[[package]]
-name = "wasi"
-version = "0.14.2+wasi-0.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9683f9a5a998d873c0d21fcbe3c083009670149a8fab228644b8bd36b2c48cb3"
-dependencies = [
- "wit-bindgen-rt",
-]
+checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"

 [[package]]
 name = "winapi"
@ -684,11 +671,11 @@ checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"

 [[package]]
 name = "winapi-util"
-version = "0.1.10"
+version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0978bf7171b3d90bac376700cb56d606feb40f251a475a5d6634613564460b22"
+checksum = "cf221c93e13a30d793f7645a0e7762c55d169dbb0a49671918a2319d289b10bb"
 dependencies = [
- "windows-sys 0.60.2",
+ "windows-sys 0.59.0",
 ]

 [[package]]
@ -698,10 +685,13 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"

 [[package]]
-name = "windows-link"
-version = "0.1.3"
+name = "windows-sys"
+version = "0.52.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5e6ad25900d524eaabdbbb96d20b4311e1e7ae1699af4fb28c17ae66c80d798a"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets",
+]

 [[package]]
 name = "windows-sys"
@ -709,16 +699,7 @@ version = "0.59.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
 dependencies = [
- "windows-targets 0.52.6",
-]
-
-[[package]]
-name = "windows-sys"
-version = "0.60.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2f500e4d28234f72040990ec9d39e3a6b950f9f22d3dba18416c35882612bcb"
-dependencies = [
- "windows-targets 0.53.3",
+ "windows-targets",
 ]

 [[package]]
@ -727,31 +708,14 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
 dependencies = [
- "windows_aarch64_gnullvm 0.52.6",
- "windows_aarch64_msvc 0.52.6",
- "windows_i686_gnu 0.52.6",
- "windows_i686_gnullvm 0.52.6",
- "windows_i686_msvc 0.52.6",
- "windows_x86_64_gnu 0.52.6",
- "windows_x86_64_gnullvm 0.52.6",
- "windows_x86_64_msvc 0.52.6",
-]
-
-[[package]]
-name = "windows-targets"
-version = "0.53.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d5fe6031c4041849d7c496a8ded650796e7b6ecc19df1a431c1a363342e5dc91"
-dependencies = [
- "windows-link",
- "windows_aarch64_gnullvm 0.53.0",
- "windows_aarch64_msvc 0.53.0",
- "windows_i686_gnu 0.53.0",
- "windows_i686_gnullvm 0.53.0",
- "windows_i686_msvc 0.53.0",
- "windows_x86_64_gnu 0.53.0",
- "windows_x86_64_gnullvm 0.53.0",
- "windows_x86_64_msvc 0.53.0",
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
 ]

 [[package]]
@ -760,107 +724,53 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"

-[[package]]
-name = "windows_aarch64_gnullvm"
-version = "0.53.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86b8d5f90ddd19cb4a147a5fa63ca848db3df085e25fee3cc10b39b6eebae764"
-
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"

-[[package]]
-name = "windows_aarch64_msvc"
-version = "0.53.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7651a1f62a11b8cbd5e0d42526e55f2c99886c77e007179efff86c2b137e66c"
-
 [[package]]
 name = "windows_i686_gnu"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"

-[[package]]
-name = "windows_i686_gnu"
-version = "0.53.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c1dc67659d35f387f5f6c479dc4e28f1d4bb90ddd1a5d3da2e5d97b42d6272c3"
-
 [[package]]
 name = "windows_i686_gnullvm"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"

-[[package]]
-name = "windows_i686_gnullvm"
-version = "0.53.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ce6ccbdedbf6d6354471319e781c0dfef054c81fbc7cf83f338a4296c0cae11"
-
 [[package]]
 name = "windows_i686_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"

-[[package]]
-name = "windows_i686_msvc"
-version = "0.53.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "581fee95406bb13382d2f65cd4a908ca7b1e4c2f1917f143ba16efe98a589b5d"
-
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"

-[[package]]
-name = "windows_x86_64_gnu"
-version = "0.53.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2e55b5ac9ea33f2fc1716d1742db15574fd6fc8dadc51caab1c16a3d3b4190ba"
-
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"

-[[package]]
-name = "windows_x86_64_gnullvm"
-version = "0.53.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a6e035dd0599267ce1ee132e51c27dd29437f63325753051e71dd9e42406c57"
-
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"

-[[package]]
-name = "windows_x86_64_msvc"
-version = "0.53.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "271414315aff87387382ec3d271b52d7ae78726f5d44ac98b4f4030c91880486"
-
 [[package]]
 name = "winnow"
-version = "0.7.12"
+version = "0.6.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f3edebf492c8125044983378ecb5766203ad3b4c2f7a922bd7dd207f6d443e95"
-
-[[package]]
-name = "wit-bindgen-rt"
-version = "0.39.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6f42320e61fe2cfd34354ecb597f86f413484a798ba44a8ca1165c58d42da6c1"
+checksum = "36c1fec1a2bb5866f07c25f68c26e565c4c200aebb96d7e55710c19d3e8ac49b"
 dependencies = [
- "bitflags 2.9.2",
+ "memchr",
 ]
--- a/Cargo.toml
+++ b/Cargo.toml
@ -1,11 +1,12 @@
 [workspace]
+resolver = "2"
 exclude = [
  "tests/test_exercises",
  "dev",
 ]

 [workspace.package]
-version = "6.5.0"
+version = "6.4.0"
 authors = [
  "Mo Bitar <mo8it@proton.me>", # https://github.com/mo8it
  "Liv <mokou@fastmail.com>", # https://github.com/shadows-withal
@ -14,12 +15,12 @@ authors = [
 ]
 repository = "https://github.com/rust-lang/rustlings"
 license = "MIT"
-edition = "2024" # On Update: Update the edition of `rustfmt` in `dev check` and `CARGO_TOML` in `dev new`.
-rust-version = "1.88"
+edition = "2021" # On Update: Update the edition of the `rustfmt` command that checks the solutions.
+rust-version = "1.80"

 [workspace.dependencies]
-serde = { version = "1.0", features = ["derive"] }
-toml = { version = "0.9", default-features = false, features = ["std", "parse", "serde"] }
+serde = { version = "1.0.214", features = ["derive"] }
+toml_edit = { version = "0.22.22", default-features = false, features = ["parse", "serde"] }

 [package]
 name = "rustlings"
@ -45,20 +46,21 @@ include = [
 ]

 [dependencies]
-anyhow = "1.0"
-clap = { version = "4.5", features = ["derive"] }
-crossterm = { version = "0.29", default-features = false, features = ["windows", "events"] }
-notify = "8.0"
-rustlings-macros = { path = "rustlings-macros", version = "=6.5.0" }
-serde_json = "1.0"
+anyhow = "1.0.93"
+clap = { version = "4.5.20", features = ["derive"] }
+crossterm = { version = "0.28.1", default-features = false, features = ["windows", "events"] }
+notify = "7.0.0"
+os_pipe = "1.2.1"
+rustlings-macros = { path = "rustlings-macros", version = "=6.4.0" }
+serde_json = "1.0.132"
 serde.workspace = true
-toml.workspace = true
+toml_edit.workspace = true

 [target.'cfg(not(windows))'.dependencies]
-rustix = { version = "1.0", default-features = false, features = ["std", "stdio", "termios"] }
+rustix = { version = "0.38.38", default-features = false, features = ["std", "stdio", "termios"] }

 [dev-dependencies]
-tempfile = "3.21"
+tempfile = "3.14.0"

 [profile.release]
 panic = "abort"
@ -82,6 +84,8 @@ infinite_loop = "deny"
 mem_forget = "deny"
 dbg_macro = "warn"
 todo = "warn"
+# TODO: Remove after the following fix is released: https://github.com/rust-lang/rust-clippy/pull/13102
+needless_option_as_deref = "allow"

 [lints]
 workspace = true
--- a/README.md
+++ b/README.md
@ -1,7 +1,165 @@
-# [Rustlings](https://rustlings.rust-lang.org) 🦀
+<div class="oranda-hide">

-Small exercises to get you used to reading and writing [Rust](https://www.rust-lang.org) code - _Recommended in parallel to reading [the official Rust book](https://doc.rust-lang.org/book) 📚️_
+# Rustlings 🦀❤️

-Visit the **website** for a demo, info about setup and more:
+</div>

-## ➡️ [rustlings.rust-lang.org](https://rustlings.rust-lang.org) ⬅️
+Greetings and welcome to Rustlings.
+This project contains small exercises to get you used to reading and writing Rust code.
+This includes reading and responding to compiler messages!
+
+It is recommended to do the Rustlings exercises in parallel to reading [the official Rust book](https://doc.rust-lang.org/book/), the most comprehensive resource for learning Rust 📚️
+
+[Rust By Example](https://doc.rust-lang.org/rust-by-example/) is another recommended resource that you might find helpful.
+It contains code examples and exercises similar to Rustlings, but online.
+
+## Getting Started
+
+### Installing Rust
+
+Before installing Rustlings, you need to have the **latest version of Rust** installed.
+Visit [www.rust-lang.org/tools/install](https://www.rust-lang.org/tools/install) for further instructions on installing Rust.
+This will also install _Cargo_, Rust's package/project manager.
+
+> 🐧 If you're on Linux, make sure you've installed `gcc` (for a linker).
+>
+> Deb: `sudo apt install gcc`.
+> Dnf: `sudo dnf install gcc`.
+
+> 🍎 If you're on MacOS, make sure you've installed Xcode and its developer tools by running `xcode-select --install`.
+
+### Installing Rustlings
+
+The following command will download and compile Rustlings:
+
+```bash
+cargo install rustlings
+```
+
+<details>
+<summary><strong>If the installation fails…</strong> (<em>click to expand</em>)</summary>
+
+- Make sure you have the latest Rust version by running `rustup update`
+- Try adding the `--locked` flag: `cargo install rustlings --locked`
+- Otherwise, please [report the issue](https://github.com/rust-lang/rustlings/issues/new)
+
+</details>
+
+### Initialization
+
+After installing Rustlings, run the following command to initialize the `rustlings/` directory:
+
+```bash
+rustlings init
+```
+
+<details>
+<summary><strong>If the command <code>rustlings</code> can't be found…</strong> (<em>click to expand</em>)</summary>
+
+You are probably using Linux and installed Rust using your package manager.
+
+Cargo installs binaries to the directory `~/.cargo/bin`.
+Sadly, package managers often don't add `~/.cargo/bin` to your `PATH` environment variable.
+
+The solution is to …
+
+- either add `~/.cargo/bin` manually to `PATH`
+- or to uninstall Rust from the package manager and install it using the official way with `rustup`: https://www.rust-lang.org/tools/install
+
+</details>
+
+Now, go into the newly initialized directory and launch Rustlings for further instructions on getting started with the exercises:
+
+```bash
+cd rustlings/
+rustlings
+```
+
+## Working environment
+
+### Editor
+
+Our general recommendation is [VS Code](https://code.visualstudio.com/) with the [rust-analyzer plugin](https://marketplace.visualstudio.com/items?itemName=rust-lang.rust-analyzer).
+But any editor that supports [rust-analyzer](https://rust-analyzer.github.io/) should be enough for working on the exercises.
+
+### Terminal
+
+While working with Rustlings, please use a modern terminal for the best user experience.
+The default terminal on Linux and Mac should be sufficient.
+On Windows, we recommend the [Windows Terminal](https://aka.ms/terminal).
+
+## Doing exercises
+
+The exercises are sorted by topic and can be found in the subdirectory `exercises/<topic>`.
+For every topic, there is an additional `README.md` file with some resources to get you started on the topic.
+We highly recommend that you have a look at them before you start 📚️
+
+Most exercises contain an error that keeps them from compiling, and it's up to you to fix it!
+Some exercises contain tests that need to pass for the exercise to be done ✅
+
+Search for `TODO` and `todo!()` to find out what you need to change.
+Ask for hints by entering `h` in the _watch mode_ 💡
+
+### Watch Mode
+
+After [initialization](#initialization), Rustlings can be launched by simply running the command `rustlings`.
+
+This will start the _watch mode_ which walks you through the exercises in a predefined order (what we think is best for newcomers).
+It will rerun the current exercise automatically every time you change the exercise's file in the `exercises/` directory.
+
+<details>
+<summary><strong>If detecting file changes in the <code>exercises/</code> directory fails…</strong> (<em>click to expand</em>)</summary>
+
+> You can add the **`--manual-run`** flag (`rustlings --manual-run`) to manually rerun the current exercise by entering `r` in the watch mode.
+>
+> Please [report the issue](https://github.com/rust-lang/rustlings/issues/new) with some information about your operating system and whether you run Rustlings in a container or virtual machine (e.g. WSL).
+
+</details>
+
+### Exercise List
+
+In the [watch mode](#watch-mode) (after launching `rustlings`), you can enter `l` to open the interactive exercise list.
+
+The list allows you to…
+
+- See the status of all exercises (done or pending)
+- `c`: Continue at another exercise (temporarily skip some exercises or go back to a previous one)
+- `r`: Reset status and file of the selected exercise (you need to _reload/reopen_ its file in your editor afterwards)
+
+See the footer of the list for all possible keys.
+
+## Questions?
+
+If you need any help while doing the exercises and the builtin-hints aren't helpful, feel free to ask in the [_Q&A_ category of the discussions](https://github.com/rust-lang/rustlings/discussions/categories/q-a?discussions_q=) if your question wasn't asked yet 💡
+
+## Third-Party Exercises
+
+Third-party exercises are a set of exercises maintained by the community.
+You can use the same `rustlings` program that you installed with `cargo install rustlings` to run them:
+
+- [日本語版 Rustlings](https://github.com/sotanengel/rustlings-jp)：A Japanese translation of the Rustlings exercises.
+
+Do you want to create your own set of Rustlings exercises to focus on some specific topic?
+Or do you want to translate the original Rustlings exercises?
+Then follow the the guide about [third-party exercises](https://github.com/rust-lang/rustlings/blob/main/THIRD_PARTY_EXERCISES.md)!
+
+## Continuing On
+
+Once you've completed Rustlings, put your new knowledge to good use!
+Continue practicing your Rust skills by building your own projects, contributing to Rustlings, or finding other open-source projects to contribute to.
+
+## Uninstalling Rustlings
+
+If you want to remove Rustlings from your system, run the following command:
+
+```bash
+cargo uninstall rustlings
+```
+
+## Contributing
+
+See [CONTRIBUTING.md](https://github.com/rust-lang/rustlings/blob/main/CONTRIBUTING.md) 🔗
+
+## Contributors ✨
+
+Thanks to [all the wonderful contributors](https://github.com/rust-lang/rustlings/graphs/contributors) 🎉
--- a/THIRD_PARTY_EXERCISES.md
+++ b/THIRD_PARTY_EXERCISES.md
@ -0,0 +1,53 @@
+# Third-Party Exercises
+
+The support of Rustlings for third-party exercises allows you to create your own set of Rustlings exercises to focus on some specific topic.
+You could also offer a translation of the original Rustlings exercises as third-party exercises.
+
+## Getting started
+
+To create third-party exercises, install Rustlings and run `rustlings dev new PROJECT_NAME`.
+This command will, similar to `cargo new PROJECT_NAME`, create a template directory called `PROJECT_NAME` with all what you need to get started.
+
+Read the comments in the generated `info.toml` file to understand its format.
+It allows you to set a custom welcome and final message and specify the metadata of every exercise.
+
+## Create an exercise
+
+Here is an example of the metadata of one file:
+
+```toml
+[[exercises]]
+name = "intro1"
+hint = """
+To finish this exercise, you need to …
+This link might help you …"""
+```
+
+After entering this in `info.toml`, create the file `intro1.rs` in the `exercises/` directory.
+The exercise needs to contain a `main` function, but it can be empty.
+Adding tests is recommended.
+Look at the official Rustlings exercises for inspiration.
+
+You can optionally add a solution file `intro1.rs` to the `solutions/` directory.
+
+Now, run `rustlings dev check`.
+It will tell you about any issues with your exercises.
+For example, it will tell you to run `rustlings dev update` to update the `Cargo.toml` file to include the new exercise `intro1`.
+
+`rustlings dev check` will also run your solutions (if you have any) to make sure that they run successfully.
+
+That's it!
+You finished your first exercise 🎉
+
+## Publish
+
+Now, add more exercises and publish them as a Git repository.
+
+Users just have to clone that repository and run `rustlings` in it to start working on your set of exercises just like the official ones.
+
+One difference to the official exercises is that the solution files will not be hidden until the user finishes an exercise.
+But you can trust the users to not look at the solution too early 😉
+
+## Share
+
+After publishing your set of exercises, open an issue or a pull request in the official Rustlings repository to link to your project in the README 😃
--- a/build.rs
+++ b/build.rs
@ -1,5 +0,0 @@
-fn main() {
-    // Fix building from source on Windows because it can't handle file links.
-    #[cfg(windows)]
-    let _ = std::fs::copy("dev/Cargo.toml", "dev-Cargo.toml");
-}
--- a/clippy.toml
+++ b/clippy.toml
@ -1,11 +1,15 @@
 disallowed-types = [
-  { path = "crossterm::style::Stylize", reason = "inefficient, use `.queue(…)` instead" },
-  { path = "crossterm::style::styled_content::StyledContent", reason = "inefficient, use `.queue(…)` instead" },
+  # Inefficient. Use `.queue(…)` instead.
+  "crossterm::style::Stylize",
+  "crossterm::style::styled_content::StyledContent",
 ]

 disallowed-methods = [
-  { path = "crossterm::style::style", reason = "inefficient, use `.queue(…)` instead" },
-  { path = "std::thread::spawn", replacement = "std::thread::Builder::spawn", reason = "handle the error" },
-  { path = "std::thread::Scope::spawn", replacement = "std::thread::Builder::spawn", reason = "handle the error" },
-  { path = "std::process::exit", replacement = "std::process::ExitCode" },
+  # Inefficient. Use `.queue(…)` instead.
+  "crossterm::style::style",
+  # Use `thread::Builder::spawn` instead and handle the error.
+  "std::thread::spawn",
+  "std::thread::Scope::spawn",
+  # Return `ExitCode` instead.
+  "std::process::exit",
 ]
--- a/dev/Cargo.toml
+++ b/dev/Cargo.toml
@ -1,4 +1,4 @@
-# Don't edit the `bin` list manually! It is updated by `cargo dev update`. This comment line will be stripped in `rustlings init`.
+# Don't edit the `bin` list manually! It is updated by `cargo run -- dev update`. This comment line will be stripped in `rustlings init`.
 bin = [
  { name = "intro1", path = "../exercises/00_intro/intro1.rs" },
  { name = "intro1_sol", path = "../solutions/00_intro/intro1.rs" },
@ -192,7 +192,7 @@ bin = [

 [package]
 name = "exercises"
-edition = "2024"
+edition = "2021"
 # Don't publish the exercises on crates.io!
 publish = false

--- a/exercises/01_variables/README.md
+++ b/exercises/01_variables/README.md
@ -1,7 +1,7 @@
 # Variables

 In Rust, variables are immutable by default.
-When a variable is immutable, once a value is bound to a name, you can't change that value.
+When a variable is immutable, once a value is bound to a name, you can’t change that value.
 You can make them mutable by adding `mut` in front of the variable name.

 ## Further information
--- a/exercises/01_variables/variables5.rs
+++ b/exercises/01_variables/variables5.rs
@ -1,6 +1,6 @@
 fn main() {
    let number = "T-H-R-E-E"; // Don't change this line
-    println!("Spell a number: {number}");
+    println!("Spell a number: {}", number);

    // TODO: Fix the compiler error by changing the line below without renaming the variable.
    number = 3;
--- a/exercises/03_if/if2.rs
+++ b/exercises/03_if/if2.rs
@ -19,7 +19,7 @@ mod tests {

    #[test]
    fn yummy_food() {
-        // This means that calling `picky_eater` with the argument "strawberry" should return "Yummy!".
+        // This means that calling `picky_eater` with the argument "food" should return "Yummy!".
        assert_eq!(picky_eater("strawberry"), "Yummy!");
    }

--- a/exercises/05_vecs/vecs2.rs
+++ b/exercises/05_vecs/vecs2.rs
@ -9,6 +9,26 @@ fn vec_loop(input: &[i32]) -> Vec<i32> {
    output
 }

+fn vec_map_example(input: &[i32]) -> Vec<i32> {
+    // An example of collecting a vector after mapping.
+    // We map each element of the `input` slice to its value plus 1.
+    // If the input is `[1, 2, 3]`, the output is `[2, 3, 4]`.
+    input.iter().map(|element| element + 1).collect()
+}
+
+fn vec_map(input: &[i32]) -> Vec<i32> {
+    // TODO: Here, we also want to multiply each element in the `input` slice
+    // by 2, but with iterator mapping instead of manually pushing into an empty
+    // vector.
+    // See the example in the function `vec_map_example` above.
+    input
+        .iter()
+        .map(|element| {
+            // ???
+        })
+        .collect()
+}
+
 fn main() {
    // You can optionally experiment here.
 }
@ -23,4 +43,18 @@ mod tests {
        let ans = vec_loop(&input);
        assert_eq!(ans, [4, 8, 12, 16, 20]);
    }
+
+    #[test]
+    fn test_vec_map_example() {
+        let input = [1, 2, 3];
+        let ans = vec_map_example(&input);
+        assert_eq!(ans, [2, 3, 4]);
+    }
+
+    #[test]
+    fn test_vec_map() {
+        let input = [2, 4, 6, 8, 10];
+        let ans = vec_map(&input);
+        assert_eq!(ans, [4, 8, 12, 16, 20]);
+    }
 }
--- a/exercises/08_enums/README.md
+++ b/exercises/08_enums/README.md
@ -1,10 +1,10 @@
 # Enums

 Rust allows you to define types called "enums" which enumerate possible values.
-Enums are a feature in many languages, but their capabilities differ in each language. Rust's enums are most similar to algebraic data types in functional languages, such as F#, OCaml, and Haskell.
+Enums are a feature in many languages, but their capabilities differ in each language. Rust’s enums are most similar to algebraic data types in functional languages, such as F#, OCaml, and Haskell.
 Useful in combination with enums is Rust's "pattern matching" facility, which makes it easy to run different code for different values of an enumeration.

 ## Further information

 - [Enums](https://doc.rust-lang.org/book/ch06-00-enums.html)
- [Pattern syntax](https://doc.rust-lang.org/book/ch19-03-pattern-syntax.html)
+- [Pattern syntax](https://doc.rust-lang.org/book/ch18-03-pattern-syntax.html)
--- a/exercises/09_strings/strings3.rs
+++ b/exercises/09_strings/strings3.rs
@ -23,7 +23,6 @@ mod tests {
        assert_eq!(trim_me("Hello!     "), "Hello!");
        assert_eq!(trim_me("  What's up!"), "What's up!");
        assert_eq!(trim_me("   Hola!  "), "Hola!");
-        assert_eq!(trim_me("Hi!"), "Hi!");
    }

    #[test]
--- a/exercises/12_options/options1.rs
+++ b/exercises/12_options/options1.rs
@ -1,8 +1,8 @@
-// This function returns how much ice cream there is left in the fridge.
+// This function returns how much icecream there is left in the fridge.
 // If it's before 22:00 (24-hour system), then 5 scoops are left. At 22:00,
-// someone eats it all, so no ice cream is left (value 0). Return `None` if
+// someone eats it all, so no icecream is left (value 0). Return `None` if
 // `hour_of_day` is higher than 23.
-fn maybe_ice_cream(hour_of_day: u16) -> Option<u16> {
+fn maybe_icecream(hour_of_day: u16) -> Option<u16> {
    // TODO: Complete the function body.
 }

@ -18,19 +18,19 @@ mod tests {
    fn raw_value() {
        // TODO: Fix this test. How do you get the value contained in the
        // Option?
-        let ice_creams = maybe_ice_cream(12);
+        let icecreams = maybe_icecream(12);

-        assert_eq!(ice_creams, 5); // Don't change this line.
+        assert_eq!(icecreams, 5); // Don't change this line.
    }

    #[test]
-    fn check_ice_cream() {
-        assert_eq!(maybe_ice_cream(0), Some(5));
-        assert_eq!(maybe_ice_cream(9), Some(5));
-        assert_eq!(maybe_ice_cream(18), Some(5));
-        assert_eq!(maybe_ice_cream(22), Some(0));
-        assert_eq!(maybe_ice_cream(23), Some(0));
-        assert_eq!(maybe_ice_cream(24), None);
-        assert_eq!(maybe_ice_cream(25), None);
+    fn check_icecream() {
+        assert_eq!(maybe_icecream(0), Some(5));
+        assert_eq!(maybe_icecream(9), Some(5));
+        assert_eq!(maybe_icecream(18), Some(5));
+        assert_eq!(maybe_icecream(22), Some(0));
+        assert_eq!(maybe_icecream(23), Some(0));
+        assert_eq!(maybe_icecream(24), None);
+        assert_eq!(maybe_icecream(25), None);
    }
 }
--- a/exercises/12_options/options3.rs
+++ b/exercises/12_options/options3.rs
@ -9,7 +9,7 @@ fn main() {

    // TODO: Fix the compiler error by adding something to this match statement.
    match optional_point {
-        Some(p) => println!("Coordinates are {},{}", p.x, p.y),
+        Some(p) => println!("Co-ordinates are {},{}", p.x, p.y),
        _ => panic!("No match!"),
    }

--- a/exercises/13_error_handling/README.md
+++ b/exercises/13_error_handling/README.md
@ -1,8 +1,8 @@
 # Error handling

-Most errors aren't serious enough to require the program to stop entirely.
-Sometimes, when a function fails, it's for a reason that you can easily interpret and respond to.
-For example, if you try to open a file and that operation fails because the file doesn't exist, you might want to create the file instead of terminating the process.
+Most errors aren’t serious enough to require the program to stop entirely.
+Sometimes, when a function fails, it’s for a reason that you can easily interpret and respond to.
+For example, if you try to open a file and that operation fails because the file doesn’t exist, you might want to create the file instead of terminating the process.

 ## Further information

--- a/exercises/13_error_handling/errors4.rs
+++ b/exercises/13_error_handling/errors4.rs
@ -10,7 +10,6 @@ struct PositiveNonzeroInteger(u64);
 impl PositiveNonzeroInteger {
    fn new(value: i64) -> Result<Self, CreationError> {
        // TODO: This function shouldn't always return an `Ok`.
-        // Read the tests below to clarify what should be returned.
        Ok(Self(value as u64))
    }
 }
--- a/exercises/13_error_handling/errors5.rs
+++ b/exercises/13_error_handling/errors5.rs
@ -6,7 +6,7 @@
 //
 // In short, this particular use case for boxes is for when you want to own a
 // value and you care only that it is a type which implements a particular
-// trait. To do so, the `Box` is declared as of type `Box<dyn Trait>` where
+// trait. To do so, The `Box` is declared as of type `Box<dyn Trait>` where
 // `Trait` is the trait the compiler looks for on any value used in that
 // context. For this exercise, that context is the potential errors which
 // can be returned in a `Result`.
--- a/exercises/18_iterators/iterators3.rs
+++ b/exercises/18_iterators/iterators3.rs
@ -39,8 +39,6 @@ mod tests {
    #[test]
    fn test_success() {
        assert_eq!(divide(81, 9), Ok(9));
-        assert_eq!(divide(81, -1), Ok(-81));
-        assert_eq!(divide(i64::MIN, i64::MIN), Ok(1));
    }

    #[test]
--- a/exercises/21_macros/README.md
+++ b/exercises/21_macros/README.md
@ -10,6 +10,5 @@ of exercises to Rustlings, but is all about learning to write Macros.

 ## Further information

- [The Rust Book - Macros](https://doc.rust-lang.org/book/ch20-05-macros.html)
+- [Macros](https://doc.rust-lang.org/book/ch19-06-macros.html)
 - [The Little Book of Rust Macros](https://veykril.github.io/tlborm/)
- [Rust by Example - macro_rules!](https://doc.rust-lang.org/rust-by-example/macros.html)
--- a/exercises/22_clippy/clippy3.rs
+++ b/exercises/22_clippy/clippy3.rs
@ -1,25 +1,22 @@
-// Here are some more easy Clippy fixes so you can see its utility.
+// Here are some more easy Clippy fixes so you can see its utility 📎
 // TODO: Fix all the Clippy lints.

+#[rustfmt::skip]
 #[allow(unused_variables, unused_assignments)]
 fn main() {
-    let my_option: Option<&str> = None;
-    // Assume that you don't know the value of `my_option`.
-    // In the case of `Some`, we want to print its value.
+    let my_option: Option<()> = None;
    if my_option.is_none() {
-        println!("{}", my_option.unwrap());
+        println!("{:?}", my_option.unwrap());
    }

-    #[rustfmt::skip]
    let my_arr = &[
        -1, -2, -3
        -4, -5, -6
    ];
    println!("My array! Here it is: {my_arr:?}");

-    let mut my_vec = vec![1, 2, 3, 4, 5];
-    my_vec.resize(0, 5);
-    println!("This Vec is empty, see? {my_vec:?}");
+    let my_empty_vec = vec![1, 2, 3, 4, 5].resize(0, 5);
+    println!("This Vec is empty, see? {my_empty_vec:?}");

    let mut value_a = 45;
    let mut value_b = 66;
--- a/exercises/README.md
+++ b/exercises/README.md
@ -9,7 +9,7 @@
 | vecs                   | §8.1                |
 | move_semantics         | §4.1-2              |
 | structs                | §5.1, §5.3          |
-| enums                  | §6, §19.3           |
+| enums                  | §6, §18.3           |
 | strings                | §8.2                |
 | modules                | §7                  |
 | hashmaps               | §8.3                |
@ -22,6 +22,6 @@
 | iterators              | §13.2-4             |
 | smart_pointers         | §15, §16.3          |
 | threads                | §16.1-3             |
-| macros                 | §20.5               |
-| clippy                 | Appendix D          |
+| macros                 | §19.5               |
+| clippy                 | §21.4               |
 | conversions            | n/a                 |
--- a/oranda.json
+++ b/oranda.json
@ -0,0 +1,13 @@
+{
+  "project": {
+    "homepage": "https://rustlings.cool",
+    "repository": "https://github.com/rust-lang/rustlings"
+  },
+  "marketing": {
+    "analytics": {
+      "plausible": {
+        "domain": "rustlings.cool"
+      }
+    }
+  }
+}
--- a/release-hook.sh
+++ b/release-hook.sh
@ -9,8 +9,8 @@ cargo upgrades
 # Similar to CI
 cargo clippy -- --deny warnings
 cargo fmt --all --check
-cargo test --workspace
-cargo dev check --require-solutions
+cargo test --workspace --all-targets
+cargo run -- dev check --require-solutions

 # MSRV
-cargo +1.88 dev check --require-solutions
+cargo +1.80 run -- dev check --require-solutions
--- a/rustlings-macros/Cargo.toml
+++ b/rustlings-macros/Cargo.toml
@ -16,9 +16,9 @@ include = [
 proc-macro = true

 [dependencies]
-quote = "1.0"
+quote = "1.0.37"
 serde.workspace = true
-toml.workspace = true
+toml_edit.workspace = true

 [lints]
 workspace = true
--- a/rustlings-macros/info.toml
+++ b/rustlings-macros/info.toml
@ -318,7 +318,16 @@ of the Rust book to learn more."""
 name = "vecs2"
 dir = "05_vecs"
 hint = """
-Use the `.push()` method on the vector to push new elements to it."""
+In the first function, we create an empty vector and want to push new elements
+to it.
+
+In the second function, we map the values of the input and collect them into
+a vector.
+
+After you've completed both functions, decide for yourself which approach you
+like better.
+
+What do you think is the more commonly used pattern under Rust developers?"""

 # MOVE SEMANTICS

@ -755,7 +764,7 @@ Notice how the trait takes ownership of `self` and returns `Self`.

 Although the signature of `append_bar` in the trait takes `self` as argument,
 the implementation can take `mut self` instead. This is possible because the
-value is owned anyway."""
+the value is owned anyway."""

 [[exercises]]
 name = "traits3"
--- a/rustlings-macros/src/lib.rs
+++ b/rustlings-macros/src/lib.rs
@ -16,7 +16,7 @@ struct InfoFile {
 #[proc_macro]
 pub fn include_files(_: TokenStream) -> TokenStream {
    let info_file = include_str!("../info.toml");
-    let exercises = toml::de::from_str::<InfoFile>(info_file)
+    let exercises = toml_edit::de::from_str::<InfoFile>(info_file)
        .expect("Failed to parse `info.toml`")
        .exercises;

--- a/solutions/01_variables/variables5.rs
+++ b/solutions/01_variables/variables5.rs
@ -1,6 +1,6 @@
 fn main() {
    let number = "T-H-R-E-E";
-    println!("Spell a number: {number}");
+    println!("Spell a number: {}", number);

    // Using variable shadowing
    // https://doc.rust-lang.org/book/ch03-01-variables-and-mutability.html#shadowing
--- a/solutions/03_if/if1.rs
+++ b/solutions/03_if/if1.rs
@ -1,5 +1,9 @@
 fn bigger(a: i32, b: i32) -> i32 {
-    if a > b { a } else { b }
+    if a > b {
+        a
+    } else {
+        b
+    }
 }

 fn main() {
--- a/solutions/05_vecs/vecs2.rs
+++ b/solutions/05_vecs/vecs2.rs
@ -8,6 +8,22 @@ fn vec_loop(input: &[i32]) -> Vec<i32> {
    output
 }

+fn vec_map_example(input: &[i32]) -> Vec<i32> {
+    // An example of collecting a vector after mapping.
+    // We map each element of the `input` slice to its value plus 1.
+    // If the input is `[1, 2, 3]`, the output is `[2, 3, 4]`.
+    input.iter().map(|element| element + 1).collect()
+}
+
+fn vec_map(input: &[i32]) -> Vec<i32> {
+    // We will dive deeper into iterators, but for now, this is all what you
+    // had to do!
+    // Advanced note: This method is more efficient because it automatically
+    // preallocates enough capacity. This can be done manually in `vec_loop`
+    // using `Vec::with_capacity(input.len())` instead of `Vec::new()`.
+    input.iter().map(|element| 2 * element).collect()
+}
+
 fn main() {
    // You can optionally experiment here.
 }
@ -22,4 +38,18 @@ mod tests {
        let ans = vec_loop(&input);
        assert_eq!(ans, [4, 8, 12, 16, 20]);
    }
+
+    #[test]
+    fn test_vec_map_example() {
+        let input = [1, 2, 3];
+        let ans = vec_map_example(&input);
+        assert_eq!(ans, [2, 3, 4]);
+    }
+
+    #[test]
+    fn test_vec_map() {
+        let input = [2, 4, 6, 8, 10];
+        let ans = vec_map(&input);
+        assert_eq!(ans, [4, 8, 12, 16, 20]);
+    }
 }
--- a/solutions/06_move_semantics/move_semantics4.rs
+++ b/solutions/06_move_semantics/move_semantics4.rs
@ -4,6 +4,8 @@ fn main() {

 #[cfg(test)]
 mod tests {
+    // TODO: Fix the compiler errors only by reordering the lines in the test.
+    // Don't add, change or remove any line.
    #[test]
    fn move_semantics4() {
        let mut x = Vec::new();
--- a/solutions/09_strings/strings3.rs
+++ b/solutions/09_strings/strings3.rs
@ -26,7 +26,6 @@ mod tests {
        assert_eq!(trim_me("Hello!     "), "Hello!");
        assert_eq!(trim_me("  What's up!"), "What's up!");
        assert_eq!(trim_me("   Hola!  "), "Hola!");
-        assert_eq!(trim_me("Hi!"), "Hi!");
    }

    #[test]
--- a/solutions/09_strings/strings4.rs
+++ b/solutions/09_strings/strings4.rs
@ -19,7 +19,7 @@ fn main() {
    // `.into()` converts a type into an expected type.
    // If it is called where `String` is expected, it will convert `&str` to `String`.
    string("nice weather".into());
-    // But if it is called where `&str` is expected, then `&str` is kept as `&str` since no conversion is needed.
+    // But if it is called where `&str` is expected, then `&str` is kept `&str` since no conversion is needed.
    // If you remove the `#[allow(…)]` line, then Clippy will tell you to remove `.into()` below since it is a useless conversion.
    #[allow(clippy::useless_conversion)]
    string_slice("nice weather".into());
--- a/solutions/11_hashmaps/hashmaps1.rs
+++ b/solutions/11_hashmaps/hashmaps1.rs
@ -1,7 +1,7 @@
 // A basket of fruits in the form of a hash map needs to be defined. The key
 // represents the name of the fruit and the value represents how many of that
 // particular fruit is in the basket. You have to put at least 3 different
-// types of fruits (e.g. apple, banana, mango) in the basket and the total count
+// types of fruits (e.g apple, banana, mango) in the basket and the total count
 // of all the fruits should be at least 5.

 use std::collections::HashMap;
--- a/solutions/11_hashmaps/hashmaps3.rs
+++ b/solutions/11_hashmaps/hashmaps3.rs
@ -60,11 +60,9 @@ England,Spain,1,0";
    fn build_scores() {
        let scores = build_scores_table(RESULTS);

-        assert!(
-            ["England", "France", "Germany", "Italy", "Poland", "Spain"]
-                .into_iter()
-                .all(|team_name| scores.contains_key(team_name))
-        );
+        assert!(["England", "France", "Germany", "Italy", "Poland", "Spain"]
+            .into_iter()
+            .all(|team_name| scores.contains_key(team_name)));
    }

    #[test]
--- a/solutions/12_options/options1.rs
+++ b/solutions/12_options/options1.rs
@ -1,8 +1,8 @@
-// This function returns how much ice cream there is left in the fridge.
+// This function returns how much icecream there is left in the fridge.
 // If it's before 22:00 (24-hour system), then 5 scoops are left. At 22:00,
-// someone eats it all, so no ice cream is left (value 0). Return `None` if
+// someone eats it all, so no icecream is left (value 0). Return `None` if
 // `hour_of_day` is higher than 23.
-fn maybe_ice_cream(hour_of_day: u16) -> Option<u16> {
+fn maybe_icecream(hour_of_day: u16) -> Option<u16> {
    match hour_of_day {
        0..=21 => Some(5),
        22..=23 => Some(0),
@ -21,19 +21,19 @@ mod tests {
    #[test]
    fn raw_value() {
        // Using `unwrap` is fine in a test.
-        let ice_creams = maybe_ice_cream(12).unwrap();
+        let icecreams = maybe_icecream(12).unwrap();

-        assert_eq!(ice_creams, 5);
+        assert_eq!(icecreams, 5);
    }

    #[test]
-    fn check_ice_cream() {
-        assert_eq!(maybe_ice_cream(0), Some(5));
-        assert_eq!(maybe_ice_cream(9), Some(5));
-        assert_eq!(maybe_ice_cream(18), Some(5));
-        assert_eq!(maybe_ice_cream(22), Some(0));
-        assert_eq!(maybe_ice_cream(23), Some(0));
-        assert_eq!(maybe_ice_cream(24), None);
-        assert_eq!(maybe_ice_cream(25), None);
+    fn check_icecream() {
+        assert_eq!(maybe_icecream(0), Some(5));
+        assert_eq!(maybe_icecream(9), Some(5));
+        assert_eq!(maybe_icecream(18), Some(5));
+        assert_eq!(maybe_icecream(22), Some(0));
+        assert_eq!(maybe_icecream(23), Some(0));
+        assert_eq!(maybe_icecream(24), None);
+        assert_eq!(maybe_icecream(25), None);
    }
 }
--- a/solutions/12_options/options3.rs
+++ b/solutions/12_options/options3.rs
@ -10,7 +10,7 @@ fn main() {
    // Solution 1: Matching over the `Option` (not `&Option`) but without moving
    // out of the `Some` variant.
    match optional_point {
-        Some(ref p) => println!("Coordinates are {},{}", p.x, p.y),
+        Some(ref p) => println!("Co-ordinates are {},{}", p.x, p.y),
        //   ^^^ added
        _ => panic!("No match!"),
    }
@ -18,8 +18,7 @@ fn main() {
    // Solution 2: Matching over a reference (`&Option`) by added `&` before
    // `optional_point`.
    match &optional_point {
-        //^ added
-        Some(p) => println!("Coordinates are {},{}", p.x, p.y),
+        Some(p) => println!("Co-ordinates are {},{}", p.x, p.y),
        _ => panic!("No match!"),
    }

--- a/solutions/13_error_handling/errors2.rs
+++ b/solutions/13_error_handling/errors2.rs
@ -16,7 +16,7 @@

 use std::num::ParseIntError;

-#[allow(unused_variables, clippy::question_mark)]
+#[allow(unused_variables)]
 fn total_cost(item_quantity: &str) -> Result<i32, ParseIntError> {
    let processing_fee = 1;
    let cost_per_item = 5;
--- a/solutions/13_error_handling/errors5.rs
+++ b/solutions/13_error_handling/errors5.rs
@ -6,7 +6,7 @@
 //
 // In short, this particular use case for boxes is for when you want to own a
 // value and you care only that it is a type which implements a particular
-// trait. To do so, the `Box` is declared as of type `Box<dyn Trait>` where
+// trait. To do so, The `Box` is declared as of type `Box<dyn Trait>` where
 // `Trait` is the trait the compiler looks for on any value used in that
 // context. For this exercise, that context is the potential errors which
 // can be returned in a `Result`.
--- a/solutions/13_error_handling/errors6.rs
+++ b/solutions/13_error_handling/errors6.rs
@ -29,21 +29,6 @@ impl ParsePosNonzeroError {
    }
 }

-// As an alternative solution, implementing the `From` trait allows for the
-// automatic conversion from a `ParseIntError` into a `ParsePosNonzeroError`
-// using the `?` operator, without the need to call `map_err`.
-//
-// ```
-// let x: i64 = s.parse()?;
-// ```
-//
-// Traits like `From` will be dealt with in later exercises.
-impl From<ParseIntError> for ParsePosNonzeroError {
-    fn from(err: ParseIntError) -> Self {
-        ParsePosNonzeroError::ParseInt(err)
-    }
-}
-
 #[derive(PartialEq, Debug)]
 struct PositiveNonzeroInteger(u64);

--- a/solutions/16_lifetimes/lifetimes1.rs
+++ b/solutions/16_lifetimes/lifetimes1.rs
@ -5,7 +5,11 @@

 fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
    //    ^^^^     ^^          ^^          ^^
-    if x.len() > y.len() { x } else { y }
+    if x.len() > y.len() {
+        x
+    } else {
+        y
+    }
 }

 fn main() {
--- a/solutions/16_lifetimes/lifetimes2.rs
+++ b/solutions/16_lifetimes/lifetimes2.rs
@ -1,10 +1,14 @@
 fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
-    if x.len() > y.len() { x } else { y }
+    if x.len() > y.len() {
+        x
+    } else {
+        y
+    }
 }

 fn main() {
    let string1 = String::from("long string is long");
-    // Solution 1: You can move `strings2` out of the inner block so that it is
+    // Solution1: You can move `strings2` out of the inner block so that it is
    // not dropped before the print statement.
    let string2 = String::from("xyz");
    let result;
@ -21,7 +25,7 @@ fn main() {
    {
        let string2 = String::from("xyz");
        result = longest(&string1, &string2);
-        // Solution 2: You can move the print statement into the inner block so
+        // Solution2: You can move the print statement into the inner block so
        // that it is executed before `string2` is dropped.
        println!("The longest string is '{result}'");
        // `string2` dropped here (end of the inner scope).
--- a/solutions/18_iterators/iterators3.rs
+++ b/solutions/18_iterators/iterators3.rs
@ -52,8 +52,6 @@ mod tests {
    #[test]
    fn test_success() {
        assert_eq!(divide(81, 9), Ok(9));
-        assert_eq!(divide(81, -1), Ok(-81));
-        assert_eq!(divide(i64::MIN, i64::MIN), Ok(1));
    }

    #[test]
--- a/solutions/19_smart_pointers/rc1.rs
+++ b/solutions/19_smart_pointers/rc1.rs
@ -63,10 +63,12 @@ mod tests {
        println!("reference count = {}", Rc::strong_count(&sun)); // 7 references
        saturn.details();

+        // TODO
        let uranus = Planet::Uranus(Rc::clone(&sun));
        println!("reference count = {}", Rc::strong_count(&sun)); // 8 references
        uranus.details();

+        // TODO
        let neptune = Planet::Neptune(Rc::clone(&sun));
        println!("reference count = {}", Rc::strong_count(&sun)); // 9 references
        neptune.details();
--- a/solutions/21_macros/macros3.rs
+++ b/solutions/21_macros/macros3.rs
@ -1,4 +1,4 @@
-// Added the `macro_use` attribute.
+// Added the attribute `macro_use` attribute.
 #[macro_use]
 mod macros {
    macro_rules! my_macro {
--- a/solutions/22_clippy/clippy3.rs
+++ b/solutions/22_clippy/clippy3.rs
@ -1,31 +1,31 @@
 use std::mem;

+#[rustfmt::skip]
 #[allow(unused_variables, unused_assignments)]
 fn main() {
-    let my_option: Option<&str> = None;
+    let my_option: Option<()> = None;
    // `unwrap` of an `Option` after checking if it is `None` will panic.
    // Use `if-let` instead.
    if let Some(value) = my_option {
-        println!("{value}");
+        println!("{value:?}");
    }

    // A comma was missing.
-    #[rustfmt::skip]
    let my_arr = &[
        -1, -2, -3,
        -4, -5, -6,
    ];
-    println!("My array! Here it is: {my_arr:?}");
+    println!("My array! Here it is: {:?}", my_arr);

-    let mut my_vec = vec![1, 2, 3, 4, 5];
+    let mut my_empty_vec = vec![1, 2, 3, 4, 5];
    // `resize` mutates a vector instead of returning a new one.
    // `resize(0, …)` clears a vector, so it is better to use `clear`.
-    my_vec.clear();
-    println!("This Vec is empty, see? {my_vec:?}");
+    my_empty_vec.clear();
+    println!("This Vec is empty, see? {my_empty_vec:?}");

    let mut value_a = 45;
    let mut value_b = 66;
    // Use `mem::swap` to correctly swap two values.
    mem::swap(&mut value_a, &mut value_b);
-    println!("value a: {value_a}; value b: {value_b}");
+    println!("value a: {}; value b: {}", value_a, value_b);
 }
--- a/solutions/quizzes/quiz2.rs
+++ b/solutions/quizzes/quiz2.rs
@ -62,8 +62,8 @@ mod tests {
    // Import `transformer`.
    use super::my_module::transformer;

-    use super::Command;
    use super::my_module::transformer_iter;
+    use super::Command;

    #[test]
    fn it_works() {
--- a/src/app_state.rs
+++ b/src/app_state.rs
@ -1,11 +1,11 @@
-use anyhow::{Context, Error, Result, bail};
-use crossterm::{QueueableCommand, cursor, terminal};
+use anyhow::{bail, Context, Error, Result};
+use crossterm::{cursor, terminal, QueueableCommand};
 use std::{
    collections::HashSet,
    env,
    fs::{File, OpenOptions},
    io::{Read, Seek, StdoutLock, Write},
-    path::{MAIN_SEPARATOR_STR, Path},
+    path::{Path, MAIN_SEPARATOR_STR},
    process::{Command, Stdio},
    sync::{
        atomic::{AtomicUsize, Ordering::Relaxed},
@ -60,7 +60,8 @@ pub struct AppState {
    file_buf: Vec<u8>,
    official_exercises: bool,
    cmd_runner: CmdRunner,
-    emit_file_links: bool,
+    // Running in VS Code.
+    vs_code: bool,
 }

 impl AppState {
@ -180,8 +181,7 @@ impl AppState {
            file_buf,
            official_exercises: !Path::new("info.toml").exists(),
            cmd_runner,
-            // VS Code has its own file link handling
-            emit_file_links: env::var_os("TERM_PROGRAM").is_none_or(|v| v != "vscode"),
+            vs_code: env::var_os("TERM_PROGRAM").is_some_and(|v| v == "vscode"),
        };

        Ok((slf, state_file_status))
@ -218,8 +218,8 @@ impl AppState {
    }

    #[inline]
-    pub fn emit_file_links(&self) -> bool {
-        self.emit_file_links
+    pub fn vs_code(&self) -> bool {
+        self.vs_code
    }

    // Write the state file.
@ -315,7 +315,7 @@ impl AppState {
    }

    // Official exercises: Dump the original file from the binary.
-    // Community exercises: Reset the exercise file with `git stash`.
+    // Third-party exercises: Reset the exercise file with `git stash`.
    fn reset(&self, exercise_ind: usize, path: &str) -> Result<()> {
        if self.official_exercises {
            return EMBEDDED_FILES
@ -385,7 +385,7 @@ impl AppState {
    }

    /// Official exercises: Dump the solution file from the binary and return its path.
-    /// Community exercises: Check if a solution file exists and return its path in that case.
+    /// Third-party exercises: Check if a solution file exists and return its path in that case.
    pub fn current_solution_path(&self) -> Result<Option<String>> {
        if cfg!(debug_assertions) {
            return Ok(None);
@ -427,34 +427,32 @@ impl AppState {
                let next_exercise_ind = &next_exercise_ind;
                let slf = &self;
                thread::Builder::new()
-                    .spawn_scoped(s, move || {
-                        loop {
-                            let exercise_ind = next_exercise_ind.fetch_add(1, Relaxed);
-                            let Some(exercise) = slf.exercises.get(exercise_ind) else {
-                                // No more exercises.
-                                break;
-                            };
+                    .spawn_scoped(s, move || loop {
+                        let exercise_ind = next_exercise_ind.fetch_add(1, Relaxed);
+                        let Some(exercise) = slf.exercises.get(exercise_ind) else {
+                            // No more exercises.
+                            break;
+                        };

-                            if exercise_progress_sender
-                                .send((exercise_ind, CheckProgress::Checking))
-                                .is_err()
-                            {
-                                break;
-                            };
+                        if exercise_progress_sender
+                            .send((exercise_ind, CheckProgress::Checking))
+                            .is_err()
+                        {
+                            break;
+                        };

-                            let success = exercise.run_exercise(None, &slf.cmd_runner);
-                            let progress = match success {
-                                Ok(true) => CheckProgress::Done,
-                                Ok(false) => CheckProgress::Pending,
-                                Err(_) => CheckProgress::None,
-                            };
+                        let success = exercise.run_exercise(None, &slf.cmd_runner);
+                        let progress = match success {
+                            Ok(true) => CheckProgress::Done,
+                            Ok(false) => CheckProgress::Pending,
+                            Err(_) => CheckProgress::None,
+                        };

-                            if exercise_progress_sender
-                                .send((exercise_ind, progress))
-                                .is_err()
-                            {
-                                break;
-                            }
+                        if exercise_progress_sender
+                            .send((exercise_ind, progress))
+                            .is_err()
+                        {
+                            break;
                        }
                    })
                    .context("Failed to spawn a thread to check all exercises")?;
@ -621,7 +619,7 @@ mod tests {
            file_buf: Vec::new(),
            official_exercises: true,
            cmd_runner: CmdRunner::build().unwrap(),
-            emit_file_links: true,
+            vs_code: false,
        };

        let mut assert = |done: [bool; 3], expected: [Option<usize>; 3]| {
--- a/src/cargo_toml.rs
+++ b/src/cargo_toml.rs
@ -74,13 +74,13 @@ pub fn updated_cargo_toml(
    let (bins_start_ind, bins_end_ind) = bins_start_end_ind(current_cargo_toml)?;

    let mut updated_cargo_toml = Vec::with_capacity(BINS_BUFFER_CAPACITY);
-    updated_cargo_toml.extend_from_slice(&current_cargo_toml.as_bytes()[..bins_start_ind]);
+    updated_cargo_toml.extend_from_slice(current_cargo_toml[..bins_start_ind].as_bytes());
    append_bins(
        &mut updated_cargo_toml,
        exercise_infos,
        exercise_path_prefix,
    );
-    updated_cargo_toml.extend_from_slice(&current_cargo_toml.as_bytes()[bins_end_ind..]);
+    updated_cargo_toml.extend_from_slice(current_cargo_toml[bins_end_ind..].as_bytes());

    Ok(updated_cargo_toml)
 }
@ -134,14 +134,7 @@ mod tests {
        );

        assert_eq!(
-            updated_cargo_toml(
-                &exercise_infos,
-                "abc\n\
-                 bin = [xxx]\n\
-                 123",
-                b"../"
-            )
-            .unwrap(),
+            updated_cargo_toml(&exercise_infos, "abc\nbin = [xxx]\n123", b"../").unwrap(),
            br#"abc
 bin = [
  { name = "1", path = "../exercises/1.rs" },
--- a/src/cmd.rs
+++ b/src/cmd.rs
@ -1,7 +1,7 @@
-use anyhow::{Context, Result, bail};
+use anyhow::{bail, Context, Result};
 use serde::Deserialize;
 use std::{
-    io::{Read, pipe},
+    io::Read,
    path::PathBuf,
    process::{Command, Stdio},
 };
@ -17,7 +17,7 @@ fn run_cmd(mut cmd: Command, description: &str, output: Option<&mut Vec<u8>>) ->
    };

    let mut handle = if let Some(output) = output {
-        let (mut reader, writer) = pipe().with_context(|| {
+        let (mut reader, writer) = os_pipe::pipe().with_context(|| {
            format!("Failed to create a pipe to run the command `{description}``")
        })?;

--- a/src/dev.rs
+++ b/src/dev.rs
@ -1,4 +1,4 @@
-use anyhow::{Context, Result, bail};
+use anyhow::{bail, Context, Result};
 use clap::Subcommand;
 use std::path::PathBuf;

@ -8,7 +8,7 @@ mod update;

 #[derive(Subcommand)]
 pub enum DevCommands {
-    /// Create a new project for community exercises
+    /// Create a new project for third-party Rustlings exercises
    New {
        /// The path to create the project in
        path: PathBuf,
--- a/src/dev/check.rs
+++ b/src/dev/check.rs
@ -1,8 +1,8 @@
-use anyhow::{Context, Error, Result, anyhow, bail};
+use anyhow::{anyhow, bail, Context, Error, Result};
 use std::{
    cmp::Ordering,
    collections::HashSet,
-    fs::{self, OpenOptions, read_dir},
+    fs::{self, read_dir, OpenOptions},
    io::{self, Read, Write},
    path::{Path, PathBuf},
    process::{Command, Stdio},
@ -10,12 +10,11 @@ use std::{
 };

 use crate::{
-    CURRENT_FORMAT_VERSION,
-    cargo_toml::{BINS_BUFFER_CAPACITY, append_bins, bins_start_end_ind},
+    cargo_toml::{append_bins, bins_start_end_ind, BINS_BUFFER_CAPACITY},
    cmd::CmdRunner,
-    exercise::{OUTPUT_CAPACITY, RunnableExercise},
+    exercise::{RunnableExercise, OUTPUT_CAPACITY},
    info_file::{ExerciseInfo, InfoFile},
-    term::ProgressCounter,
+    CURRENT_FORMAT_VERSION,
 };

 const MAX_N_EXERCISES: usize = 999;
@ -43,14 +42,10 @@ fn check_cargo_toml(

    if old_bins != new_bins {
        if cfg!(debug_assertions) {
-            bail!(
-                "The file `dev/Cargo.toml` is outdated. Run `cargo dev update` to update it. Then run `cargo run -- dev check` again"
-            );
+            bail!("The file `dev/Cargo.toml` is outdated. Run `cargo run -- dev update` to update it. Then run `cargo run -- dev check` again");
        }

-        bail!(
-            "The file `Cargo.toml` is outdated. Run `rustlings dev update` to update it. Then run `rustlings dev check` again"
-        );
+        bail!("The file `Cargo.toml` is outdated. Run `rustlings dev update` to update it. Then run `rustlings dev check` again");
    }

    Ok(())
@ -68,9 +63,7 @@ fn check_info_file_exercises(info_file: &InfoFile) -> Result<HashSet<PathBuf>> {
            bail!("Found an empty exercise name in `info.toml`");
        }
        if name.len() > MAX_EXERCISE_NAME_LEN {
-            bail!(
-                "The length of the exercise name `{name}` is bigger than the maximum {MAX_EXERCISE_NAME_LEN}"
-            );
+            bail!("The length of the exercise name `{name}` is bigger than the maximum {MAX_EXERCISE_NAME_LEN}");
        }
        if let Some(c) = forbidden_char(name) {
            bail!("Char `{c}` in the exercise name `{name}` is not allowed");
@ -86,9 +79,7 @@ fn check_info_file_exercises(info_file: &InfoFile) -> Result<HashSet<PathBuf>> {
        }

        if exercise_info.hint.trim_ascii().is_empty() {
-            bail!(
-                "The exercise `{name}` has an empty hint. Please provide a hint or at least tell the user why a hint isn't needed for this exercise"
-            );
+            bail!("The exercise `{name}` has an empty hint. Please provide a hint or at least tell the user why a hint isn't needed for this exercise");
        }

        if !names.insert(name) {
@ -105,30 +96,20 @@ fn check_info_file_exercises(info_file: &InfoFile) -> Result<HashSet<PathBuf>> {
            .with_context(|| format!("Failed to read the file {path}"))?;

        if !file_buf.contains("fn main()") {
-            bail!(
-                "The `main` function is missing in the file `{path}`.\n\
-                 Create at least an empty `main` function to avoid language server errors"
-            );
+            bail!("The `main` function is missing in the file `{path}`.\nCreate at least an empty `main` function to avoid language server errors");
        }

        if !file_buf.contains("// TODO") {
-            bail!(
-                "Didn't find any `// TODO` comment in the file `{path}`.\n\
-                 You need to have at least one such comment to guide the user."
-            );
+            bail!("Didn't find any `// TODO` comment in the file `{path}`.\nYou need to have at least one such comment to guide the user.");
        }

        let contains_tests = file_buf.contains("#[test]\n");
        if exercise_info.test {
            if !contains_tests {
-                bail!(
-                    "The file `{path}` doesn't contain any tests. If you don't want to add tests to this exercise, set `test = false` for this exercise in the `info.toml` file"
-                );
+                bail!("The file `{path}` doesn't contain any tests. If you don't want to add tests to this exercise, set `test = false` for this exercise in the `info.toml` file");
            }
        } else if contains_tests {
-            bail!(
-                "The file `{path}` contains tests annotated with `#[test]` but the exercise `{name}` has `test = false` in the `info.toml` file"
-            );
+            bail!("The file `{path}` contains tests annotated with `#[test]` but the exercise `{name}` has `test = false` in the `info.toml` file");
        }

        file_buf.clear();
@ -144,10 +125,7 @@ fn check_info_file_exercises(info_file: &InfoFile) -> Result<HashSet<PathBuf>> {
 // Only one level of directory nesting is allowed.
 fn check_unexpected_files(dir: &str, allowed_rust_files: &HashSet<PathBuf>) -> Result<()> {
    let unexpected_file = |path: &Path| {
-        anyhow!(
-            "Found the file `{}`. Only `README.md` and Rust files related to an exercise in `info.toml` are allowed in the `{dir}` directory",
-            path.display()
-        )
+        anyhow!("Found the file `{}`. Only `README.md` and Rust files related to an exercise in `info.toml` are allowed in the `{dir}` directory", path.display())
    };

    for entry in read_dir(dir).with_context(|| format!("Failed to open the `{dir}` directory"))? {
@ -176,10 +154,7 @@ fn check_unexpected_files(dir: &str, allowed_rust_files: &HashSet<PathBuf>) -> R
            let path = entry.path();

            if !entry.file_type().unwrap().is_file() {
-                bail!(
-                    "Found `{}` but expected only files. Only one level of exercise nesting is allowed",
-                    path.display()
-                );
+                bail!("Found `{}` but expected only files. Only one level of exercise nesting is allowed", path.display());
            }

            let file_name = path.file_name().unwrap();
@ -220,7 +195,10 @@ fn check_exercises_unsolved(
        .collect::<Result<Vec<_>, _>>()
        .context("Failed to spawn a thread to check if an exercise is already solved")?;

-    let mut progress_counter = ProgressCounter::new(&mut stdout, handles.len())?;
+    let n_handles = handles.len();
+    write!(stdout, "Progress: 0/{n_handles}")?;
+    stdout.flush()?;
+    let mut handle_num = 1;

    for (exercise_name, handle) in handles {
        let Ok(result) = handle.join() else {
@ -229,31 +207,25 @@ fn check_exercises_unsolved(

        match result {
            Ok(true) => {
-                bail!(
-                    "The exercise {exercise_name} is already solved.\n\
-                     {SKIP_CHECK_UNSOLVED_HINT}",
-                )
+                bail!("The exercise {exercise_name} is already solved.\n{SKIP_CHECK_UNSOLVED_HINT}",)
            }
            Ok(false) => (),
            Err(e) => return Err(e),
        }

-        progress_counter.increment()?;
+        write!(stdout, "\rProgress: {handle_num}/{n_handles}")?;
+        stdout.flush()?;
+        handle_num += 1;
    }
+    stdout.write_all(b"\n")?;

    Ok(())
 }

 fn check_exercises(info_file: &'static InfoFile, cmd_runner: &'static CmdRunner) -> Result<()> {
    match info_file.format_version.cmp(&CURRENT_FORMAT_VERSION) {
-        Ordering::Less => bail!(
-            "`format_version` < {CURRENT_FORMAT_VERSION} (supported version)\n\
-             Please migrate to the latest format version"
-        ),
-        Ordering::Greater => bail!(
-            "`format_version` > {CURRENT_FORMAT_VERSION} (supported version)\n\
-             Try updating the Rustlings program"
-        ),
+        Ordering::Less => bail!("`format_version` < {CURRENT_FORMAT_VERSION} (supported version)\nPlease migrate to the latest format version"),
+        Ordering::Greater => bail!("`format_version` > {CURRENT_FORMAT_VERSION} (supported version)\nTry updating the Rustlings program"),
        Ordering::Equal => (),
    }

@ -315,12 +287,15 @@ fn check_solutions(
    fmt_cmd
        .arg("--check")
        .arg("--edition")
-        .arg("2024")
+        .arg("2021")
        .arg("--color")
        .arg("always")
        .stdin(Stdio::null());

-    let mut progress_counter = ProgressCounter::new(&mut stdout, handles.len())?;
+    let n_handles = handles.len();
+    write!(stdout, "Progress: 0/{n_handles}")?;
+    stdout.flush()?;
+    let mut handle_num = 1;

    for (exercise_info, handle) in info_file.exercises.iter().zip(handles) {
        let Ok(check_result) = handle.join() else {
@ -337,7 +312,7 @@ fn check_solutions(
            }
            SolutionCheck::MissingOptional => (),
            SolutionCheck::RunFailure { output } => {
-                drop(progress_counter);
+                stdout.write_all(b"\n\n")?;
                stdout.write_all(&output)?;
                bail!(
                    "Running the solution of the exercise {} failed with the error above",
@ -347,21 +322,22 @@ fn check_solutions(
            SolutionCheck::Err(e) => return Err(e),
        }

-        progress_counter.increment()?;
+        write!(stdout, "\rProgress: {handle_num}/{n_handles}")?;
+        stdout.flush()?;
+        handle_num += 1;
    }
+    stdout.write_all(b"\n")?;

-    let n_solutions = sol_paths.len();
    let handle = thread::Builder::new()
        .spawn(move || check_unexpected_files("solutions", &sol_paths))
        .context(
            "Failed to spawn a thread to check for unexpected files in the solutions directory",
        )?;

-    if n_solutions > 0
-        && !fmt_cmd
-            .status()
-            .context("Failed to run `rustfmt` on all solution files")?
-            .success()
+    if !fmt_cmd
+        .status()
+        .context("Failed to run `rustfmt` on all solution files")?
+        .success()
    {
        bail!("Some solutions aren't formatted. Run `rustfmt` on them");
    }
@ -377,7 +353,7 @@ pub fn check(require_solutions: bool) -> Result<()> {
    }

    if cfg!(debug_assertions) {
-        // A hack to make `cargo dev check` work when developing Rustlings.
+        // A hack to make `cargo run -- dev check` work when developing Rustlings.
        check_cargo_toml(&info_file.exercises, "dev/Cargo.toml", b"../")?;
    } else {
        check_cargo_toml(&info_file.exercises, "Cargo.toml", b"")?;
--- a/src/dev/new.rs
+++ b/src/dev/new.rs
@ -1,4 +1,4 @@
-use anyhow::{Context, Result, bail};
+use anyhow::{bail, Context, Result};
 use std::{
    env::set_current_dir,
    fs::{self, create_dir},
@ -6,7 +6,7 @@ use std::{
    process::Command,
 };

-use crate::{CURRENT_FORMAT_VERSION, init::RUST_ANALYZER_TOML};
+use crate::{init::RUST_ANALYZER_TOML, CURRENT_FORMAT_VERSION};

 // Create a directory relative to the current directory and print its path.
 fn create_rel_dir(dir_name: &str, current_dir: &str) -> Result<()> {
@ -55,9 +55,7 @@ pub fn new(path: &Path, no_git: bool) -> Result<()> {
    write_rel_file(
        "info.toml",
        &dir_path_str,
-        format!(
-            "{INFO_FILE_BEFORE_FORMAT_VERSION}{CURRENT_FORMAT_VERSION}{INFO_FILE_AFTER_FORMAT_VERSION}"
-        ),
+        format!("{INFO_FILE_BEFORE_FORMAT_VERSION}{CURRENT_FORMAT_VERSION}{INFO_FILE_AFTER_FORMAT_VERSION}"),
    )?;

    write_rel_file("Cargo.toml", &dir_path_str, CARGO_TOML)?;
@ -78,17 +76,18 @@ pub fn new(path: &Path, no_git: bool) -> Result<()> {
    Ok(())
 }

-pub const GITIGNORE: &[u8] = b"Cargo.lock
+pub const GITIGNORE: &[u8] = b".rustlings-state.txt
+Cargo.lock
 target/
 .vscode/
 !.vscode/extensions.json
 ";

 const INFO_FILE_BEFORE_FORMAT_VERSION: &str =
-    "# The format version is an indicator of the compatibility of community exercises with the
+    "# The format version is an indicator of the compatibility of third-party exercises with the
 # Rustlings program.
 # The format version is not the same as the version of the Rustlings program.
-# In case Rustlings makes an unavoidable breaking change to the expected format of community
+# In case Rustlings makes an unavoidable breaking change to the expected format of third-party
 # exercises, you would need to raise this version and adapt to the new format.
 # Otherwise, the newest version of the Rustlings program won't be able to run these exercises.
 format_version = ";
@ -96,7 +95,7 @@ format_version = ";
 const INFO_FILE_AFTER_FORMAT_VERSION: &str = r#"

 # Optional multi-line message to be shown to users when just starting with the exercises.
-welcome_message = """Welcome to these community Rustlings exercises."""
+welcome_message = """Welcome to these third-party Rustlings exercises."""

 # Optional multi-line message to be shown to users after finishing all exercises.
 final_message = """We hope that you found the exercises helpful :D"""
@ -131,7 +130,7 @@ bin = []

 [package]
 name = "exercises"
-edition = "2024"
+edition = "2021"
 # Don't publish the exercises on crates.io!
 publish = false

@ -140,7 +139,7 @@ publish = false

 const README: &str = "# Rustlings 🦀

-Welcome to these community Rustlings exercises 😃
+Welcome to these third-party Rustlings exercises 😃

 First, [install Rustlings using the official instructions](https://github.com/rust-lang/rustlings) ✅

--- a/src/dev/update.rs
+++ b/src/dev/update.rs
@ -28,7 +28,7 @@ pub fn update() -> Result<()> {
    let info_file = InfoFile::parse()?;

    if cfg!(debug_assertions) {
-        // A hack to make `cargo dev update` work when developing Rustlings.
+        // A hack to make `cargo run -- dev update` work when developing Rustlings.
        update_cargo_toml(&info_file.exercises, "dev/Cargo.toml", b"../")
            .context("Failed to update the file `dev/Cargo.toml`")?;

--- a/src/embedded.rs
+++ b/src/embedded.rs
@ -20,10 +20,10 @@ struct ExerciseFiles {
 }

 fn create_dir_if_not_exists(path: &str) -> Result<()> {
-    if let Err(e) = create_dir(path)
-        && e.kind() != io::ErrorKind::AlreadyExists
-    {
-        return Err(Error::from(e).context(format!("Failed to create the directory {path}")));
+    if let Err(e) = create_dir(path) {
+        if e.kind() != io::ErrorKind::AlreadyExists {
+            return Err(Error::from(e).context(format!("Failed to create the directory {path}")));
+        }
    }

    Ok(())
@ -152,7 +152,7 @@ mod tests {

    #[test]
    fn dirs() {
-        let exercises = toml::de::from_str::<InfoFile>(EMBEDDED_FILES.info_file)
+        let exercises = toml_edit::de::from_str::<InfoFile>(EMBEDDED_FILES.info_file)
            .expect("Failed to parse `info.toml`")
            .exercises;

--- a/src/exercise.rs
+++ b/src/exercise.rs
@ -1,34 +1,28 @@
 use anyhow::Result;
 use crossterm::{
-    QueueableCommand,
    style::{Attribute, Color, ResetColor, SetAttribute, SetForegroundColor},
+    QueueableCommand,
 };
 use std::io::{self, StdoutLock, Write};

 use crate::{
    cmd::CmdRunner,
-    term::{self, CountedWrite, file_path, terminal_file_link, write_ansi},
+    term::{self, terminal_file_link, write_ansi, CountedWrite},
 };

 /// The initial capacity of the output buffer.
 pub const OUTPUT_CAPACITY: usize = 1 << 14;

-pub fn solution_link_line(
-    stdout: &mut StdoutLock,
-    solution_path: &str,
-    emit_file_links: bool,
-) -> io::Result<()> {
+pub fn solution_link_line(stdout: &mut StdoutLock, solution_path: &str) -> io::Result<()> {
    stdout.queue(SetAttribute(Attribute::Bold))?;
    stdout.write_all(b"Solution")?;
    stdout.queue(ResetColor)?;
    stdout.write_all(b" for comparison: ")?;
-    file_path(stdout, Color::Cyan, |writer| {
-        if emit_file_links && let Some(canonical_path) = term::canonicalize(solution_path) {
-            terminal_file_link(writer, solution_path, &canonical_path)
-        } else {
-            writer.stdout().write_all(solution_path.as_bytes())
-        }
-    })?;
+    if let Some(canonical_path) = term::canonicalize(solution_path) {
+        terminal_file_link(stdout, solution_path, &canonical_path, Color::Cyan)?;
+    } else {
+        stdout.write_all(solution_path.as_bytes())?;
+    }
    stdout.write_all(b"\n")
 }

@ -48,17 +42,17 @@ fn run_bin(

    let success = cmd_runner.run_debug_bin(bin_name, output.as_deref_mut())?;

-    if let Some(output) = output
-        && !success
-    {
-        // This output is important to show the user that something went wrong.
-        // Otherwise, calling something like `exit(1)` in an exercise without further output
-        // leaves the user confused about why the exercise isn't done yet.
-        write_ansi(output, SetAttribute(Attribute::Bold));
-        write_ansi(output, SetForegroundColor(Color::Red));
-        output.extend_from_slice(b"The exercise didn't run successfully (nonzero exit code)");
-        write_ansi(output, ResetColor);
-        output.push(b'\n');
+    if let Some(output) = output {
+        if !success {
+            // This output is important to show the user that something went wrong.
+            // Otherwise, calling something like `exit(1)` in an exercise without further output
+            // leaves the user confused about why the exercise isn't done yet.
+            write_ansi(output, SetAttribute(Attribute::Bold));
+            write_ansi(output, SetForegroundColor(Color::Red));
+            output.extend_from_slice(b"The exercise didn't run successfully (nonzero exit code)");
+            write_ansi(output, ResetColor);
+            output.push(b'\n');
+        }
    }

    Ok(success)
@ -78,18 +72,12 @@ pub struct Exercise {
 }

 impl Exercise {
-    pub fn terminal_file_link<'a>(
-        &self,
-        writer: &mut impl CountedWrite<'a>,
-        emit_file_links: bool,
-    ) -> io::Result<()> {
-        file_path(writer, Color::Blue, |writer| {
-            if emit_file_links && let Some(canonical_path) = self.canonical_path.as_deref() {
-                terminal_file_link(writer, self.path, canonical_path)
-            } else {
-                writer.write_str(self.path)
-            }
-        })
+    pub fn terminal_file_link<'a>(&self, writer: &mut impl CountedWrite<'a>) -> io::Result<()> {
+        if let Some(canonical_path) = self.canonical_path.as_deref() {
+            return terminal_file_link(writer, self.path, canonical_path, Color::Blue);
+        }
+
+        writer.write_str(self.path)
    }
 }

--- a/src/info_file.rs
+++ b/src/info_file.rs
@ -1,4 +1,4 @@
-use anyhow::{Context, Error, Result, bail};
+use anyhow::{bail, Context, Error, Result};
 use serde::Deserialize;
 use std::{fs, io::ErrorKind};

@ -79,7 +79,7 @@ impl RunnableExercise for ExerciseInfo {
 /// The deserialized `info.toml` file.
 #[derive(Deserialize)]
 pub struct InfoFile {
-    /// For possible breaking changes in the future for community exercises.
+    /// For possible breaking changes in the future for third-party exercises.
    pub format_version: u8,
    /// Shown to users when starting with the exercises.
    pub welcome_message: Option<String>,
@ -91,15 +91,15 @@ pub struct InfoFile {

 impl InfoFile {
    /// Official exercises: Parse the embedded `info.toml` file.
-    /// Community exercises: Parse the `info.toml` file in the current directory.
+    /// Third-party exercises: Parse the `info.toml` file in the current directory.
    pub fn parse() -> Result<Self> {
        // Read a local `info.toml` if it exists.
        let slf = match fs::read_to_string("info.toml") {
-            Ok(file_content) => toml::de::from_str::<Self>(&file_content)
+            Ok(file_content) => toml_edit::de::from_str::<Self>(&file_content)
                .context("Failed to parse the `info.toml` file")?,
            Err(e) => {
                if e.kind() == ErrorKind::NotFound {
-                    return toml::de::from_str(EMBEDDED_FILES.info_file)
+                    return toml_edit::de::from_str(EMBEDDED_FILES.info_file)
                        .context("Failed to parse the embedded `info.toml` file");
                }

--- a/src/init.rs
+++ b/src/init.rs
@ -1,7 +1,7 @@
-use anyhow::{Context, Result, bail};
+use anyhow::{bail, Context, Result};
 use crossterm::{
-    QueueableCommand,
    style::{Attribute, Color, ResetColor, SetAttribute, SetForegroundColor},
+    QueueableCommand,
 };
 use serde::Deserialize;
 use std::{
@ -35,27 +35,7 @@ pub fn init() -> Result<()> {
        .stdin(Stdio::null())
        .stderr(Stdio::null())
        .output()
-        .context(
-            "Failed to run the command `cargo locate-project …`\n\
-             Did you already install Rust?\n\
-             Try running `cargo --version` to diagnose the problem.",
-        )?;
-
-    if !Command::new("cargo")
-        .arg("clippy")
-        .arg("--version")
-        .stdin(Stdio::null())
-        .stdout(Stdio::null())
-        .stderr(Stdio::null())
-        .status()
-        .context("Failed to run the command `cargo clippy --version`")?
-        .success()
-    {
-        bail!(
-            "Clippy, the official Rust linter, is missing.\n\
-             Please install it first before initializing Rustlings."
-        )
-    }
+        .context(CARGO_LOCATE_PROJECT_ERR)?;

    let mut stdout = io::stdout().lock();
    let mut init_git = true;
@ -74,17 +54,13 @@ pub fn init() -> Result<()> {

        let workspace_manifest_content = fs::read_to_string(&workspace_manifest)
            .with_context(|| format!("Failed to read the file {}", workspace_manifest.display()))?;
-        if !workspace_manifest_content.contains("[workspace]")
+        if !workspace_manifest_content.contains("[workspace]\n")
            && !workspace_manifest_content.contains("workspace.")
        {
-            bail!(
-                "The current directory is already part of a Cargo project.\n\
-                 Please initialize Rustlings in a different directory"
-            );
+            bail!("The current directory is already part of a Cargo project.\nPlease initialize Rustlings in a different directory");
        }

-        stdout.write_all(b"This command will create the directory `rustlings/` as a member of this Cargo workspace.\n\
-                           Press ENTER to continue ")?;
+        stdout.write_all(b"This command will create the directory `rustlings/` as a member of this Cargo workspace.\nPress ENTER to continue ")?;
        press_enter_prompt(&mut stdout)?;

        // Make sure "rustlings" is added to `workspace.members` by making
@ -99,10 +75,7 @@ pub fn init() -> Result<()> {
            .stdout(Stdio::null())
            .status()?;
        if !status.success() {
-            bail!(
-                "Failed to initialize a new Cargo workspace member.\n\
-                 Please initialize Rustlings in a different directory"
-            );
+            bail!("Failed to initialize a new Cargo workspace member.\nPlease initialize Rustlings in a different directory");
        }

        stdout.write_all(b"The directory `rustlings` has been added to `workspace.members` in the `Cargo.toml` file of this Cargo workspace.\n")?;
@ -110,8 +83,7 @@ pub fn init() -> Result<()> {
            .context("Failed to remove the temporary directory `rustlings/`")?;
        init_git = false;
    } else {
-        stdout.write_all(b"This command will create the directory `rustlings/` which will contain the exercises.\n\
-                           Press ENTER to continue ")?;
+        stdout.write_all(b"This command will create the directory `rustlings/` which will contain the exercises.\nPress ENTER to continue ")?;
        press_enter_prompt(&mut stdout)?;
    }

@ -190,6 +162,10 @@ pub fn init() -> Result<()> {
    Ok(())
 }

+const CARGO_LOCATE_PROJECT_ERR: &str = "Failed to run the command `cargo locate-project …`
+Did you already install Rust?
+Try running `cargo --version` to diagnose the problem.";
+
 const INIT_SOLUTION_FILE: &[u8] = b"fn main() {
    // DON'T EDIT THIS SOLUTION FILE!
    // It will be automatically filled after you finish the exercise.
@ -198,7 +174,6 @@ const INIT_SOLUTION_FILE: &[u8] = b"fn main() {

 pub const RUST_ANALYZER_TOML: &[u8] = br#"check.command = "clippy"
 check.extraArgs = ["--profile", "test"]
-cargo.targetDir = true
 "#;

 const GITIGNORE: &[u8] = b"Cargo.lock
--- a/src/list.rs
+++ b/src/list.rs
@ -1,13 +1,14 @@
 use anyhow::{Context, Result};
 use crossterm::{
-    QueueableCommand, cursor,
+    cursor,
    event::{
        self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode, KeyEventKind, MouseEventKind,
    },
    terminal::{
-        DisableLineWrap, EnableLineWrap, EnterAlternateScreen, LeaveAlternateScreen,
-        disable_raw_mode, enable_raw_mode,
+        disable_raw_mode, enable_raw_mode, DisableLineWrap, EnableLineWrap, EnterAlternateScreen,
+        LeaveAlternateScreen,
    },
+    QueueableCommand,
 };
 use std::io::{self, StdoutLock, Write};

--- a/src/list/state.rs
+++ b/src/list/state.rs
@ -1,11 +1,11 @@
 use anyhow::{Context, Result};
 use crossterm::{
-    QueueableCommand,
    cursor::{MoveTo, MoveToNextLine},
    style::{
        Attribute, Attributes, Color, ResetColor, SetAttribute, SetAttributes, SetForegroundColor,
    },
    terminal::{self, BeginSynchronizedUpdate, Clear, ClearType, EndSynchronizedUpdate},
+    QueueableCommand,
 };
 use std::{
    fmt::Write as _,
@ -15,7 +15,7 @@ use std::{
 use crate::{
    app_state::AppState,
    exercise::Exercise,
-    term::{CountedWrite, MaxLenWriter, progress_bar},
+    term::{progress_bar, CountedWrite, MaxLenWriter},
 };

 use super::scroll_state::ScrollState;
@ -118,8 +118,8 @@ impl<'a> ListState<'a> {
    }

    fn draw_exercise_name(&self, writer: &mut MaxLenWriter, exercise: &Exercise) -> io::Result<()> {
-        if !self.search_query.is_empty()
-            && let Some((pre_highlight, highlight, post_highlight)) = exercise
+        if !self.search_query.is_empty() {
+            if let Some((pre_highlight, highlight, post_highlight)) = exercise
                .name
                .find(&self.search_query)
                .and_then(|ind| exercise.name.split_at_checked(ind))
@ -127,12 +127,13 @@ impl<'a> ListState<'a> {
                    rest.split_at_checked(self.search_query.len())
                        .map(|x| (pre_highlight, x.0, x.1))
                })
-        {
-            writer.write_str(pre_highlight)?;
-            writer.stdout.queue(SetForegroundColor(Color::Magenta))?;
-            writer.write_str(highlight)?;
-            writer.stdout.queue(SetForegroundColor(Color::Reset))?;
-            return writer.write_str(post_highlight);
+            {
+                writer.write_str(pre_highlight)?;
+                writer.stdout.queue(SetForegroundColor(Color::Magenta))?;
+                writer.write_str(highlight)?;
+                writer.stdout.queue(SetForegroundColor(Color::Reset))?;
+                return writer.write_str(post_highlight);
+            }
        }

        writer.write_str(exercise.name)
@ -185,7 +186,13 @@ impl<'a> ListState<'a> {

            writer.write_ascii(&self.name_col_padding[exercise.name.len()..])?;

-            exercise.terminal_file_link(&mut writer, self.app_state.emit_file_links())?;
+            // The list links aren't shown correctly in VS Code on Windows.
+            // But VS Code shows its own links anyway.
+            if self.app_state.vs_code() {
+                writer.write_str(exercise.path)?;
+            } else {
+                exercise.terminal_file_link(&mut writer)?;
+            }

            writer.write_ascii(&self.path_col_padding[exercise.path.len()..])?;

--- a/src/main.rs
+++ b/src/main.rs
@ -1,4 +1,4 @@
-use anyhow::{Context, Result, bail};
+use anyhow::{bail, Context, Result};
 use app_state::StateFileStatus;
 use clap::{Parser, Subcommand};
 use std::{
@ -58,7 +58,7 @@ enum Subcommands {
        /// The name of the exercise
        name: Option<String>,
    },
-    /// Commands for developing (community) Rustlings exercises
+    /// Commands for developing (third-party) Rustlings exercises
    #[command(subcommand)]
    Dev(DevCommands),
 }
@ -104,11 +104,7 @@ fn main() -> Result<ExitCode> {
                clear_terminal(&mut stdout)?;

                let welcome_message = welcome_message.trim_ascii();
-                write!(
-                    stdout,
-                    "{welcome_message}\n\n\
-                     Press ENTER to continue "
-                )?;
+                write!(stdout, "{welcome_message}\n\nPress ENTER to continue ")?;
                press_enter_prompt(&mut stdout)?;
                clear_terminal(&mut stdout)?;
                // Flush to be able to show errors occurring before printing a newline to stdout.
@ -167,7 +163,7 @@ fn main() -> Result<ExitCode> {
                }
                app_state
                    .current_exercise()
-                    .terminal_file_link(&mut stdout, app_state.emit_file_links())?;
+                    .terminal_file_link(&mut stdout)?;
                stdout.write_all(b"\n")?;

                return Ok(ExitCode::FAILURE);
--- a/src/run.rs
+++ b/src/run.rs
@ -1,7 +1,7 @@
 use anyhow::Result;
 use crossterm::{
-    QueueableCommand,
    style::{Color, ResetColor, SetForegroundColor},
+    QueueableCommand,
 };
 use std::{
    io::{self, Write},
@ -10,7 +10,7 @@ use std::{

 use crate::{
    app_state::{AppState, ExercisesProgress},
-    exercise::{OUTPUT_CAPACITY, RunnableExercise, solution_link_line},
+    exercise::{solution_link_line, RunnableExercise, OUTPUT_CAPACITY},
 };

 pub fn run(app_state: &mut AppState) -> Result<ExitCode> {
@ -27,7 +27,7 @@ pub fn run(app_state: &mut AppState) -> Result<ExitCode> {
        stdout.write_all(b"Ran ")?;
        app_state
            .current_exercise()
-            .terminal_file_link(&mut stdout, app_state.emit_file_links())?;
+            .terminal_file_link(&mut stdout)?;
        stdout.write_all(b" with errors\n")?;

        return Ok(ExitCode::FAILURE);
@ -41,7 +41,7 @@ pub fn run(app_state: &mut AppState) -> Result<ExitCode> {

    if let Some(solution_path) = app_state.current_solution_path()? {
        stdout.write_all(b"\n")?;
-        solution_link_line(&mut stdout, &solution_path, app_state.emit_file_links())?;
+        solution_link_line(&mut stdout, &solution_path)?;
        stdout.write_all(b"\n")?;
    }

@ -50,7 +50,7 @@ pub fn run(app_state: &mut AppState) -> Result<ExitCode> {
            stdout.write_all(b"Next exercise: ")?;
            app_state
                .current_exercise()
-                .terminal_file_link(&mut stdout, app_state.emit_file_links())?;
+                .terminal_file_link(&mut stdout)?;
            stdout.write_all(b"\n")?;
        }
        ExercisesProgress::AllDone => (),
--- a/src/term.rs
+++ b/src/term.rs
@ -1,8 +1,8 @@
 use crossterm::{
-    Command, QueueableCommand,
    cursor::MoveTo,
    style::{Attribute, Color, ResetColor, SetAttribute, SetForegroundColor},
    terminal::{Clear, ClearType},
+    Command, QueueableCommand,
 };
 use std::{
    fmt, fs,
@ -160,37 +160,6 @@ impl<'a, 'lock> CheckProgressVisualizer<'a, 'lock> {
    }
 }

-pub struct ProgressCounter<'a, 'lock> {
-    stdout: &'a mut StdoutLock<'lock>,
-    total: usize,
-    counter: usize,
-}
-
-impl<'a, 'lock> ProgressCounter<'a, 'lock> {
-    pub fn new(stdout: &'a mut StdoutLock<'lock>, total: usize) -> io::Result<Self> {
-        write!(stdout, "Progress: 0/{total}")?;
-        stdout.flush()?;
-
-        Ok(Self {
-            stdout,
-            total,
-            counter: 0,
-        })
-    }
-
-    pub fn increment(&mut self) -> io::Result<()> {
-        self.counter += 1;
-        write!(self.stdout, "\rProgress: {}/{}", self.counter, self.total)?;
-        self.stdout.flush()
-    }
-}
-
-impl Drop for ProgressCounter<'_, '_> {
-    fn drop(&mut self) {
-        let _ = self.stdout.write_all(b"\n\n");
-    }
-}
-
 pub fn progress_bar<'a>(
    writer: &mut impl CountedWrite<'a>,
    progress: u16,
@ -272,18 +241,22 @@ pub fn canonicalize(path: &str) -> Option<String> {
        })
 }

-pub fn file_path<'a, W: CountedWrite<'a>>(
-    writer: &mut W,
+pub fn terminal_file_link<'a>(
+    writer: &mut impl CountedWrite<'a>,
+    path: &str,
+    canonical_path: &str,
    color: Color,
-    f: impl FnOnce(&mut W) -> io::Result<()>,
 ) -> io::Result<()> {
    writer
        .stdout()
        .queue(SetForegroundColor(color))?
        .queue(SetAttribute(Attribute::Underlined))?;
-
-    f(writer)?;
-
+    writer.stdout().write_all(b"\x1b]8;;file://")?;
+    writer.stdout().write_all(canonical_path.as_bytes())?;
+    writer.stdout().write_all(b"\x1b\\")?;
+    // Only this part is visible.
+    writer.write_str(path)?;
+    writer.stdout().write_all(b"\x1b]8;;\x1b\\")?;
    writer
        .stdout()
        .queue(SetForegroundColor(Color::Reset))?
@ -292,19 +265,6 @@ pub fn file_path<'a, W: CountedWrite<'a>>(
    Ok(())
 }

-pub fn terminal_file_link<'a>(
-    writer: &mut impl CountedWrite<'a>,
-    path: &str,
-    canonical_path: &str,
-) -> io::Result<()> {
-    writer.stdout().write_all(b"\x1b]8;;file://")?;
-    writer.stdout().write_all(canonical_path.as_bytes())?;
-    writer.stdout().write_all(b"\x1b\\")?;
-    // Only this part is visible.
-    writer.write_str(path)?;
-    writer.stdout().write_all(b"\x1b]8;;\x1b\\")
-}
-
 pub fn write_ansi(output: &mut Vec<u8>, command: impl Command) {
    struct FmtWriter<'a>(&'a mut Vec<u8>);

--- a/src/watch.rs
+++ b/src/watch.rs
@ -74,9 +74,7 @@ fn run_watch(

        let mut watcher = RecommendedWatcher::new(
            notify_event_handler,
-            Config::default()
-                .with_follow_symlinks(false)
-                .with_poll_interval(Duration::from_secs(1)),
+            Config::default().with_poll_interval(Duration::from_secs(1)),
        )
        .inspect_err(|_| eprintln!("{NOTIFY_ERR}"))?;

--- a/src/watch/notify_event.rs
+++ b/src/watch/notify_event.rs
@ -1,18 +1,18 @@
 use anyhow::{Context, Result};
 use notify::{
-    Event, EventKind,
    event::{AccessKind, AccessMode, MetadataKind, ModifyKind, RenameMode},
+    Event, EventKind,
 };
 use std::{
    sync::{
        atomic::Ordering::Relaxed,
-        mpsc::{RecvTimeoutError, Sender, SyncSender, sync_channel},
+        mpsc::{sync_channel, RecvTimeoutError, Sender, SyncSender},
    },
    thread,
    time::Duration,
 };

-use super::{EXERCISE_RUNNING, WatchEvent};
+use super::{WatchEvent, EXERCISE_RUNNING};

 const DEBOUNCE_DURATION: Duration = Duration::from_millis(200);

--- a/src/watch/state.rs
+++ b/src/watch/state.rs
@ -1,25 +1,24 @@
 use anyhow::{Context, Result};
 use crossterm::{
-    QueueableCommand,
    style::{
        Attribute, Attributes, Color, ResetColor, SetAttribute, SetAttributes, SetForegroundColor,
    },
-    terminal,
+    terminal, QueueableCommand,
 };
 use std::{
    io::{self, Read, StdoutLock, Write},
-    sync::mpsc::{Sender, SyncSender, sync_channel},
+    sync::mpsc::{sync_channel, Sender, SyncSender},
    thread,
 };

 use crate::{
    app_state::{AppState, ExercisesProgress},
    clear_terminal,
-    exercise::{OUTPUT_CAPACITY, RunnableExercise, solution_link_line},
+    exercise::{solution_link_line, RunnableExercise, OUTPUT_CAPACITY},
    term::progress_bar,
 };

-use super::{InputPauseGuard, WatchEvent, terminal_event::terminal_event_handler};
+use super::{terminal_event::terminal_event_handler, InputPauseGuard, WatchEvent};

 const HEADING_ATTRIBUTES: Attributes = Attributes::none()
    .with(Attribute::Bold)
@ -233,7 +232,7 @@ impl<'a> WatchState<'a> {
            stdout.write_all(b"\n")?;

            if let DoneStatus::DoneWithSolution(solution_path) = &self.done_status {
-                solution_link_line(stdout, solution_path, self.app_state.emit_file_links())?;
+                solution_link_line(stdout, solution_path)?;
            }

            stdout.write_all(
@ -252,7 +251,7 @@ impl<'a> WatchState<'a> {
        stdout.write_all(b"\nCurrent exercise: ")?;
        self.app_state
            .current_exercise()
-            .terminal_file_link(stdout, self.app_state.emit_file_links())?;
+            .terminal_file_link(stdout)?;
        stdout.write_all(b"\n\n")?;

        self.show_prompt(stdout)?;
--- a/src/watch/terminal_event.rs
+++ b/src/watch/terminal_event.rs
@ -4,7 +4,7 @@ use std::sync::{
    mpsc::{Receiver, Sender},
 };

-use super::{EXERCISE_RUNNING, WatchEvent};
+use super::{WatchEvent, EXERCISE_RUNNING};

 pub enum InputEvent {
    Next,
--- a/tests/test_exercises/dev/Cargo.toml
+++ b/tests/test_exercises/dev/Cargo.toml
@ -7,5 +7,5 @@ bin = [

 [package]
 name = "test_exercises"
-edition = "2024"
+edition = "2021"
 publish = false
--- a/website/.gitignore
+++ b/website/.gitignore
@ -1,7 +0,0 @@
-/node_modules/
-/package-lock.json
-
-/public/
-
-/static/main.css
-/static/processed_images/
--- a/website/config.toml
+++ b/website/config.toml
@ -1,41 +0,0 @@
-base_url = "https://rustlings.rust-lang.org"
-title = "Rustlings"
-description = "Small exercises to get you used to reading and writing Rust code!"
-
-compile_sass = false
-build_search_index = false
-
-[markdown]
-highlight_code = true
-highlight_theme = "dracula"
-
-insert_anchor_links = "heading"
-
-[extra]
-logo_path = "images/happy_ferris.svg"
-
-[[extra.menu_items]]
-name = "Rustlings"
-url = "@/_index.md"
-[[extra.menu_items]]
-name = "Setup"
-url = "@/setup/index.md"
-[[extra.menu_items]]
-name = "Usage"
-url = "@/usage/index.md"
-[[extra.menu_items]]
-name = "Community Exercises"
-url = "@/community-exercises/index.md"
-[[extra.menu_items]]
-name = "Q&A"
-url = "https://github.com/rust-lang/rustlings/discussions/categories/q-a?discussions_q="
-
-[[extra.footer_items]]
-name = "Repository"
-url = "https://github.com/rust-lang/rustlings"
-[[extra.footer_items]]
-name = "Changelog"
-url = "https://github.com/rust-lang/rustlings/blob/main/CHANGELOG.md"
-[[extra.footer_items]]
-name = "MIT License"
-url = "https://github.com/rust-lang/rustlings/blob/main/LICENSE"
--- a/website/content/_index.md
+++ b/website/content/_index.md
@ -1,21 +0,0 @@
-+++
-+++
-
-Small exercises to get you used to reading and writing [Rust](https://www.rust-lang.org) code - _Recommended in parallel to reading [the official Rust book](https://doc.rust-lang.org/book) 📚️_
-
-<script src="https://asciinema.org/a/719805.js" id="asciicast-719805" async="true"></script>
-
-## Quick start
-
-```bash
-# Installation
-cargo install rustlings
-# Initialization
-rustlings init
-# Moving into new directory
-cd rustlings
-# Starting Rustlings
-rustlings
-```
-
-Visit the [**setup**](@/setup/index.md) page for more details 🧰
--- a/website/content/community-exercises/index.md
+++ b/website/content/community-exercises/index.md
@ -1,73 +0,0 @@
-+++
-title = "Community Exercises"
-+++
-
-## List of Community Exercises
-
- 🇯🇵 [Japanese Rustlings](https://github.com/sotanengel/rustlings-jp)：A Japanese translation of the Rustlings exercises.
- 🇨🇳 [Simplified Chinese Rustlings](https://github.com/SandmeyerX/rustlings-zh-cn): A simplified Chinese translation of the Rustlings exercises.
-
-> You can use the same `rustlings` program that you installed with `cargo install rustlings` to run community exercises.
-
-## Creating Community Exercises
-
-Rustling's support for community exercises allows you to create your own exercises to focus on some specific topic.
-You could also offer a translation of the original Rustlings exercises as community exercises.
-
-### Getting Started
-
-To create community exercises, install Rustlings and run `rustlings dev new PROJECT_NAME`.
-This command will, similar to `cargo new PROJECT_NAME`, create the template directory `PROJECT_NAME` with all what you need to get started.
-
-_Read the comments_ in the generated `info.toml` file to understand its format.
-It allows you to set a custom welcome and final message and specify the metadata of every exercise.
-
-### Creating an Exercise
-
-Here is an example of the metadata of one exercise:
-
-```toml
-[[exercises]]
-name = "intro1"
-hint = """
-To finish this exercise, you need to …
-These links might help you …"""
-```
-
-After entering this in `info.toml`, create the file `intro1.rs` in the `exercises/` directory.
-The exercise needs to contain a `main` function, but it can be empty.
-Adding tests is recommended.
-Look at the official Rustlings exercises for inspiration.
-
-You can optionally add a solution file `intro1.rs` to the `solutions/` directory.
-
-Now, run `rustlings dev check`.
-It will tell you about any issues with your exercises.
-For example, it will tell you to run `rustlings dev update` to update the `Cargo.toml` file to include the new exercise `intro1`.
-
-`rustlings dev check` will also run your solutions (if you have any) to make sure that they run successfully.
-
-That's it!
-You finished your first exercise 🎉
-
-### Cargo.toml
-
-Except of the `bin` list, you can modify the `Cargo.toml` file as you want.
-
-> The `bin` list is automatically updated by running `rustlings dev update`
-
- You can add dependencies in the `[dependencies]` table.
- You might want to [configure some lints](https://doc.rust-lang.org/cargo/reference/manifest.html#the-lints-section) for all exercises. You can do so in the `[lints.rust]` and `[lints.clippy]` tables.
-
-### Publishing
-
-Now, add more exercises and publish them as a Git repository.
-
-Users just have to clone that repository and run `rustlings` in it to start working on your exercises (just like the official ones).
-
-One difference to the official exercises is that the solution files will not be hidden until the user finishes an exercise.
-But you can trust your users to not open the solution too early 😉
-
-### Sharing
-
-After publishing your community exercises, open an issue or a pull request in the [official Rustlings repository](https://github.com/rust-lang/rustlings) to add your project to the [list of community exercises](#list-of-community-exercises) 😃
--- a/website/content/setup/index.md
+++ b/website/content/setup/index.md
@ -1,78 +0,0 @@
-+++
-title = "Setup"
-+++
-
-<!-- toc -->
-
-## Installing Rust
-
-Before installing Rustlings, you must have the **latest version of Rust** installed.
-Visit [www.rust-lang.org/tools/install](https://www.rust-lang.org/tools/install) for further instructions.
-This will also install _Cargo_, Rust's package/project manager.
-
-> 🐧 If you are on **Linux**, make sure you have `gcc` installed (_for a linker_).
->
-> Debian: `sudo apt install gcc`\
-> Fedora: `sudo dnf install gcc`
-
-> 🍎 If you are on **MacOS**, make sure you have _Xcode and its developer tools_ installed: `xcode-select --install`
-
-## Installing Rustlings
-
-The following command will download and compile Rustlings:
-
-```bash
-cargo install rustlings
-```
-
-{% details(summary="If the installation fails…") %}
-
- Make sure you have the latest Rust version by running `rustup update`
- Try adding the `--locked` flag: `cargo install rustlings --locked`
- Otherwise, please [report the issue](https://github.com/rust-lang/rustlings/issues/new)
-
-{% end %}
-
-## Initialization
-
-After installing Rustlings, run the following command to initialize the `rustlings/` directory:
-
-```bash
-rustlings init
-```
-
-{% details(summary="If the command <code>rustlings</code> can't be found…") %}
-
-You are probably using Linux and installed Rust using your package manager.
-
-Cargo installs binaries to the directory `~/.cargo/bin`.
-Sadly, package managers often don't add `~/.cargo/bin` to your `PATH` environment variable.
-
- Either add `~/.cargo/bin` manually to `PATH`
- Or uninstall Rust from the package manager and [install it using the official way with `rustup`](https://www.rust-lang.org/tools/install)
-
-{% end %}
-
-Now, go into the newly initialized directory and launch Rustlings for further instructions on getting started with the exercises:
-
-```bash
-cd rustlings/
-rustlings
-```
-
-## Working environment
-
-### Editor
-
-Our general recommendation is [VS Code](https://code.visualstudio.com/) with the [rust-analyzer plugin](https://marketplace.visualstudio.com/items?itemName=rust-lang.rust-analyzer).
-But any editor that supports [rust-analyzer](https://rust-analyzer.github.io/) should be enough for working on the exercises.
-
-### Terminal
-
-While working with Rustlings, please use a modern terminal for the best user experience.
-The default terminal on Linux and Mac should be sufficient.
-On Windows, we recommend the [Windows Terminal](https://aka.ms/terminal).
-
-## Usage
-
-After being done with the setup, visit the [**usage**](@/usage/index.md) page for some info about using Rustlings 🚀
--- a/website/content/usage/index.md
+++ b/website/content/usage/index.md
@ -1,55 +0,0 @@
-+++
-title = "Usage"
-+++
-
-<!-- toc -->
-
-## Doing exercises
-
-The exercises are sorted by topic and can be found in the subdirectory `exercises/<topic>`.
-For every topic, there is an additional `README.md` file with some resources to get you started on the topic.
-We highly recommend that you have a look at them before you start 📚️
-
-Most exercises contain an error that keeps them from compiling, and it's up to you to fix it!
-Some exercises contain tests that need to pass for the exercise to be done ✅
-
-Search for `TODO` and `todo!()` to find out what you need to change.
-Ask for hints by entering `h` in the _watch mode_ 💡
-
-## Watch Mode
-
-After the [initialization](@/setup/index.md#initialization), Rustlings can be launched by simply running the command `rustlings`.
-
-This will start the _watch mode_ which walks you through the exercises in a predefined order (what we think is best for newcomers).
-It will rerun the current exercise automatically every time you change the exercise's file in the `exercises/` directory.
-
-{% details(summary="If detecting file changes in the <code>exercises/</code> directory fails…") %}
-
-You can add the **`--manual-run`** flag (`rustlings --manual-run`) to manually rerun the current exercise by entering `r` in the watch mode.
-
-Please [report the issue](https://github.com/rust-lang/rustlings/issues/new) with some information about your operating system and whether you run Rustlings in a container or a virtual machine (e.g. WSL).
-
-{% end %}
-
-## Exercise List
-
-In the [watch mode](#watch-mode) (after launching `rustlings`), you can enter `l` to open the interactive exercise list.
-
-The list allows you to…
-
- See the status of all exercises (done or pending)
- `c`: Continue at another exercise (temporarily skip some exercises or go back to a previous one)
- `r`: Reset status and file of the selected exercise (you need to _reload/reopen_ its file in your editor afterwards)
-
-See the footer of the list for all possible keys.
-
-## Questions?
-
-If you need any help while doing the exercises and the builtin hints aren't helpful, feel free to ask in the [_Q&A_ discussions](https://github.com/rust-lang/rustlings/discussions/categories/q-a?discussions_q=) if your question isn't answered there 💡
-
-## Continuing On
-
-Once you've completed Rustlings, put your new knowledge to good use!
-Continue practicing your Rust skills by building your own projects, contributing to Rustlings, or finding other open-source projects to contribute to.
-
-> If you want to create your own Rustlings exercises, visit the [**community exercises**](@/community-exercises/index.md) page 🏗️
--- a/website/input.css
+++ b/website/input.css
@ -1,54 +0,0 @@
-@import 'tailwindcss';
-
-@layer base {
-  h1 {
-    @apply text-4xl mt-3 mb-3 font-bold;
-  }
-  h2 {
-    @apply text-3xl mt-4 mb-1.5 font-bold;
-  }
-  h3 {
-    @apply text-2xl mt-5 mb-1.5 font-bold;
-  }
-  h4 {
-    @apply text-xl mt-6 mb-1.5 font-bold;
-  }
-  p {
-    @apply mb-2;
-  }
-  a {
-    @apply text-[#FFC832] underline hover:decoration-orange-400 transition duration-300;
-  }
-  ul {
-    @apply mt-2 mb-3 ml-1 list-disc list-inside marker:text-sky-600;
-  }
-  ol {
-    @apply mt-2 mb-3 ml-1 list-decimal list-inside marker:text-sky-500;
-  }
-  li {
-    @apply my-0.5;
-  }
-  code {
-    @apply bg-white/10 px-1 pb-px pt-1 rounded-md;
-  }
-  pre code {
-    @apply bg-inherit p-0 text-inherit;
-  }
-  hr {
-    @apply my-5 rounded-full;
-  }
-  img {
-    @apply md:w-3/4 lg:w-3/5;
-  }
-  blockquote {
-    @apply px-3 pt-2 pb-0.5 mb-4 mt-2 border-s-4 border-white/80 bg-white/7 rounded-sm;
-  }
-
-  pre {
-    @apply px-2 pt-2 pb-px overflow-x-auto text-sm sm:text-base rounded-sm mt-2 mb-4 after:content-[attr(data-lang)] after:text-[8px] after:opacity-40 selection:bg-white/15;
-  }
-  pre code mark {
-    @apply pb-0.5 pt-1 pr-px text-inherit rounded-xs;
-  }
-}
-
--- a/website/justfile
+++ b/website/justfile
@ -1,5 +0,0 @@
-zola:
-	zola serve --open
-
-tailwind:
-	npx @tailwindcss/cli -w -i input.css -o static/main.css
--- a/website/package.json
+++ b/website/package.json
@ -1,5 +0,0 @@
-{
-  "dependencies": {
-    "@tailwindcss/cli": "^4.1"
-  }
-}
--- a/website/static/images/happy_ferris.svg
+++ b/website/static/images/happy_ferris.svg
@ -1,33 +0,0 @@
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-    </g>
-</svg>
--- a/website/static/images/panic.svg
+++ b/website/static/images/panic.svg
@ -1,70 +0,0 @@
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-		L1148.012,565.511"/>
-	<path fill="#E33B26" d="M1303.604,333.083c0,0,24.966-49.774,65.808-113.261c43.023,21.212,64.416,79.228,48.262,137.662
-		c-17.846,64.558-74.748,105.16-127.096,90.689c-52.348-14.47-80.318-78.534-62.472-143.091
-		c7.909-28.618,23.501-52.519,42.964-69.011C1280.544,287.113,1303.604,333.083,1303.604,333.083"/>
-</g>
-<path d="M807.895,626.942c-7.131-58.735-72.193-61.431-72.193-61.431c-50.936,11.227-59.183,47.369-57.392,75.104L807.895,626.942z"
-	/>
-</svg>
--- a/website/static/images/rust_logo.svg
+++ b/website/static/images/rust_logo.svg
@ -1,61 +0,0 @@
-<svg version="1.1" height="106" width="106" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
-<g id="logo" transform="translate(53, 53)">
-  <path id="r" transform="translate(0.5, 0.5)" fill="white" stroke="white" stroke-width="1" stroke-linejoin="round" d="
-    M -9,-15 H 4 C 12,-15 12,-7 4,-7 H -9 Z
-    M -40,22 H 0 V 11 H -9 V 3 H 1 C 12,3 6,22 15,22 H 40
-    V 3 H 34 V 5 C 34,13 25,12 24,7 C 23,2 19,-2 18,-2 C 33,-10 24,-26 12,-26 H -35
-    V -15 H -25 V 11 H -40 Z" />
-  <g id="gear" mask="url(#holes)">
-    <circle r="43" fill="none" stroke="white" stroke-width="9" />
-    <g id="cogs">
-      <polygon id="cog" stroke="white" stroke-width="3" stroke-linejoin="round" points="46,3 51,0 46,-3" />
-      <use xlink:href="#cog" transform="rotate(11.25)" />
-      <use xlink:href="#cog" transform="rotate(22.50)" />
-      <use xlink:href="#cog" transform="rotate(33.75)" />
-      <use xlink:href="#cog" transform="rotate(45.00)" />
-      <use xlink:href="#cog" transform="rotate(56.25)" />
-      <use xlink:href="#cog" transform="rotate(67.50)" />
-      <use xlink:href="#cog" transform="rotate(78.75)" />
-      <use xlink:href="#cog" transform="rotate(90.00)" />
-      <use xlink:href="#cog" transform="rotate(101.25)" />
-      <use xlink:href="#cog" transform="rotate(112.50)" />
-      <use xlink:href="#cog" transform="rotate(123.75)" />
-      <use xlink:href="#cog" transform="rotate(135.00)" />
-      <use xlink:href="#cog" transform="rotate(146.25)" />
-      <use xlink:href="#cog" transform="rotate(157.50)" />
-      <use xlink:href="#cog" transform="rotate(168.75)" />
-      <use xlink:href="#cog" transform="rotate(180.00)" />
-      <use xlink:href="#cog" transform="rotate(191.25)" />
-      <use xlink:href="#cog" transform="rotate(202.50)" />
-      <use xlink:href="#cog" transform="rotate(213.75)" />
-      <use xlink:href="#cog" transform="rotate(225.00)" />
-      <use xlink:href="#cog" transform="rotate(236.25)" />
-      <use xlink:href="#cog" transform="rotate(247.50)" />
-      <use xlink:href="#cog" transform="rotate(258.75)" />
-      <use xlink:href="#cog" transform="rotate(270.00)" />
-      <use xlink:href="#cog" transform="rotate(281.25)" />
-      <use xlink:href="#cog" transform="rotate(292.50)" />
-      <use xlink:href="#cog" transform="rotate(303.75)" />
-      <use xlink:href="#cog" transform="rotate(315.00)" />
-      <use xlink:href="#cog" transform="rotate(326.25)" />
-      <use xlink:href="#cog" transform="rotate(337.50)" />
-      <use xlink:href="#cog" transform="rotate(348.75)" />
-    </g>
-    <g id="mounts">
-      <polygon id="mount" stroke="white" stroke-width="6" stroke-linejoin="round" points="-7,-42 0,-35 7,-42" />
-      <use xlink:href="#mount" transform="rotate(72)" />
-      <use xlink:href="#mount" transform="rotate(144)" />
-      <use xlink:href="#mount" transform="rotate(216)" />
-      <use xlink:href="#mount" transform="rotate(288)" />
-    </g>
-  </g>
-  <mask id="holes">
-    <rect x="-60" y="-60" width="120" height="120" fill="white"/>
-    <circle id="hole" cy="-40" r="3" />
-    <use xlink:href="#hole" transform="rotate(72)" />
-    <use xlink:href="#hole" transform="rotate(144)" />
-    <use xlink:href="#hole" transform="rotate(216)" />
-    <use xlink:href="#hole" transform="rotate(288)" />
-  </mask>
-</g>
-</svg>
--- a/website/templates/404.html
+++ b/website/templates/404.html
@ -1,14 +0,0 @@
-{% extends "base.html" %}
-
-{% block content %}
-    <div class="flex flex-col mx-auto text-center">
-        <h1>DON'T PANIC!</h1>
-        <h2>404: Page not found!</h2>
-
-        <img class="mx-auto max-h-[50vh]"
-             src="{{ get_url(path='images/panic.svg') | safe }}"
-             alt="">
-
-        <a class="text-2xl font-bold" href="{{ get_url(path='@/_index.md') }}">Back to homepage</a>
-    </div>
-{% endblock %}
--- a/website/templates/anchor-link.html
+++ b/website/templates/anchor-link.html
@ -1,2 +0,0 @@
-<a class="text-white no-underline transition-none hover:underline"
-   href="#{{ id }}"></a>
--- a/website/templates/base.html
+++ b/website/templates/base.html
@ -1,92 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-    <head>
-        <meta charset="UTF-8">
-        <meta name="viewport" content="width=device-width, initial-scale=1.0">
-
-        {%- set timestamp = now(timestamp=true) -%}
-
-        {%- if page.title -%}
-            {% set_global title = page.title %}
-        {%- elif section.title -%}
-            {% set_global title = section.title %}
-        {%- else -%}
-            {% set_global title = config.title %}
-        {%- endif -%}
-
-        {%- if page.description -%}
-            {% set_global description = page.description %}
-        {%- elif section.description -%}
-            {% set_global description = section.description %}
-        {%- else -%}
-            {% set_global description = config.description %}
-        {%- endif -%}
-
-        {%- if page.permalink -%}
-            {% set_global permalink = page.permalink %}
-        {%- elif section.permalink -%}
-            {% set_global permalink = section.permalink %}
-        {%- endif %}
-
-        <title>{%- block title -%}{{- title -}}{%- endblock -%}</title>
-
-        <meta name="description"
-              content="{%- block description -%}{{- description -}}{%- endblock -%}">
-
-        <link rel="icon"
-              type="image/x-icon"
-              href="{{ get_url(path=config.extra.logo_path) | safe }}?v={{ timestamp }}">
-
-        <link href="{{ get_url(path='main.css') | safe }}?v={{ timestamp }}"
-              rel="stylesheet">
-
-        <meta property="og:title" content="{{ title }}">
-        <meta property="og:description" content="{{ description }}">
-        <meta property="og:image"
-              content="{{ get_url(path=config.extra.logo_path) | safe }}?v={{ timestamp }}">
-        {% if permalink %}<meta property="og:url" content="{{ permalink | safe }}">{% endif %}
-    </head>
-
-    <body class="flex flex-col p-2 mx-auto min-h-screen text-lg text-white break-words lg:px-5 2xl:container bg-[#2A3439]">
-        <header class="flex flex-col gap-x-4 items-center py-2 px-4 mb-1 rounded-sm sm:flex-row sm:rounded-full bg-black/30">
-            <a class="transition duration-500 hover:scale-110"
-               href="{{ get_url(path='@/_index.md') | safe }}"
-               aria-hidden="true">
-                <img class="w-12 h-12"
-                     src="{{ get_url(path=config.extra.logo_path) | safe }}"
-                     alt="">
-            </a>
-
-            <nav class="flex flex-col gap-x-6 items-center font-bold sm:flex-row">
-                {% for menu_item in config.extra.menu_items %}
-                    {%- if menu_item.url is starting_with("@") -%}
-                        {% set_global menu_item_url = get_url(path=menu_item.url) %}
-                    {%- else -%}
-                        {% set_global menu_item_url = menu_item.url %}
-                    {%- endif %}
-
-                    <a class="p-1 no-underline" href="{{ menu_item_url | safe }}">{{ menu_item.name }}</a>
-                {% endfor %}
-            </nav>
-        </header>
-
-        <main class="leading-relaxed">
-            {% block content %}{% endblock %}
-        </main>
-
-        <footer class="pt-2 pb-1 mt-auto text-sm text-center">
-            <div class="inline-flex gap-x-1.5 items-center mx-auto mt-2">
-                <img class="w-8 h-8"
-                     src="{{ get_url(path='images/rust_logo.svg') | safe }}"
-                     alt="">
-                <div class="italic">Rustlings is an official Rust project</div>
-            </div>
-
-            <nav class="flex flex-col gap-y-3 justify-around py-3 mt-3 rounded-sm sm:flex-row sm:rounded-full bg-black/30">
-                {% for footer_item in config.extra.footer_items %}
-                    <a class="no-underline" href="{{ footer_item.url | safe }}">{{ footer_item.name }}</a>
-                {% endfor %}
-            </nav>
-        </footer>
-    </body>
-</html>
--- a/website/templates/index.html
+++ b/website/templates/index.html
@ -1,9 +0,0 @@
-{% extends "base.html" %}
-
-{% block content %}
-    <div class="m-3">
-        <h1>Rustlings</h1>
-
-        {{ section.content | safe }}
-    </div>
-{% endblock %}
--- a/website/templates/page.html
+++ b/website/templates/page.html
@ -1,39 +0,0 @@
-{% extends "base.html" %}
-
-{% block content %}
-    <article>
-        <h1>{{ page.title }}</h1>
-
-        <div class="py-0.5 px-4 my-3 rounded-xl border-double border-s-4">
-            <nav>
-                <ul class="ml-0 list-none">
-                    {% for parent in page.toc %}
-                        {% if parent.level == 2 %}
-                            <li>
-                                {#- -#}
-                                <a href="{{ parent.permalink | safe }}">{{ parent.title }}</a>
-                                {#- -#}
-                                {% if parent.children %}
-                                    <ul class="my-0 ml-5 list-none">
-                                        {% for child in parent.children %}
-                                            {% if child.level == 3 %}
-                                                <li>
-                                                    {#- -#}
-                                                    <a class="text-base" href="{{ child.permalink | safe }}">{{ child.title }}</a>
-                                                    {#- -#}
-                                                </li>
-                                            {% endif %}
-                                        {% endfor %}
-                                    </ul>
-                                {% endif %}
-                                {#- -#}
-                            </li>
-                        {% endif %}
-                    {% endfor %}
-                </ul>
-            </nav>
-        </div>
-
-        {{ page.content | safe }}
-    </article>
-{% endblock %}
--- a/website/templates/shortcodes/details.html
+++ b/website/templates/shortcodes/details.html
@ -1,9 +0,0 @@
-<details>
-    <summary>
-        <strong>{{ summary | safe }}</strong> (<em>click to expand</em>)
-    </summary>
-
-    <blockquote class="pt-1 mx-0.5 mt-1 rounded-none border-dashed border-x-3 border-b-3">
-        {{ body | markdown | safe }}
-    </blockquote>
-</details>