Implement TryFrom<&str> for numerical types, bool and char

[grego]

As TryFrom is a generic interface for fallible conversion, the standard library types should support it as well.

ACP: rust-lang/libs-team#132 [Accepted]

[rustbot]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @thomcc (or someone else) soon.

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[rustbot]

Hey! It looks like you've submitted a new PR for the library teams!

If this PR contains changes to any rust-lang/rust public library APIs then please comment with @rustbot label +T-libs-api -T-libs to tag it appropriately. If this PR contains changes to any unstable APIs please edit the PR description to add a link to the relevant API Change Proposal or create one if you haven't already. If you're unsure where your change falls no worries, just leave it as is and the reviewer will take a look and make a decision to forward on if necessary.

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[grego]

@rustbot label +T-libs-api -T-libs

[Noratrieb]

Thank you for the implementation!
But since this a change to the public API, you need to create an API change proposal to move this forward.

[grego]

Thank you, I created the proposal here.

[rust-log-analyzer]

The job mingw-check failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)

   Compiling unwind v0.0.0 (/checkout/library/unwind)
error[E0405]: cannot find trait `TryFrom` in this scope
   --> library/core/src/num/nonzero.rs:199:18
    |
197 | / macro_rules! try_from_str_radix_nzint_impl {
198 | |     ($($t:ty)*) => {$(
199 | |         impl<'a> TryFrom<&'a str> for $t {
200 | |             type Error = ParseIntError;
...   |
208 | |     )*}
209 | | }
209 | | }
    | |_- in this expansion of `try_from_str_radix_nzint_impl!`
210 |
211 | / try_from_str_radix_nzint_impl! { NonZeroU8 NonZeroU16 NonZeroU32 NonZeroU64 NonZeroU128 NonZeroUsize
212 | | NonZeroI8 NonZeroI16 NonZeroI32 NonZeroI64 NonZeroI128 NonZeroIsize }
    |
help: consider importing this trait
    |
3   | use crate::convert::TryFrom;

[bors]

☔ The latest upstream changes (presumably #104591) made this pull request unmergeable. Please resolve the merge conflicts.

[dtolnay]

The ACP was not accepted, so I'll go ahead and close this PR.

Thank you anyway for suggesting this API and entertaining our process!