info.toml:
```toml
[[exercises]]
name = "threads3"
path = "exercises/threads/threads3.rs"
mode = "test"
hint = """
An alternate way to handle concurrency between threads is to use
a mpsc (multiple producer, single consumer) channel to communicate.
With both a sending end and a receiving end, it's possible to
send values in one thread and receive them in another.
Multiple producers are possible by using clone() to create a duplicate
of the original sending end.
See https://doc.rust-lang.org/book/ch16-02-message-passing.html for more info.
"""
```
threads3'hint contains this link, so it should be placed in Further Information
I struggled with this exercise and didn't understand that it was looking for a summary of goals scored/conceded per team, instead of per match.
My goal here is just to clarify the language, essentially saying "the total number of goals the team scored" to indicate that we are looking for a sum.
Updated the exercise description to clarify this point.
Relates loosely to closed issue https://github.com/rust-lang/rustlings/issues/1361
The advice tell us how to return as String error message. Unless I missed something, we can't even return a String error message here, so this advice is more confusing than anything and should better be removed.
This commit makes a minor change in the wording of the description of the errors2 exercise to avoid potential confusion, changing:
"A player of the game will type in how many items they want to buy, and the `total_cost` function will calculate the total cost of the tokens."
to
"A player of the game will type in how many items they want to buy, and the `total_cost` function will calculate the total cost of the items."
