Modifying an environment variable would make the function unsafe to
call.

…e line

In particular, lifetime-generic associated types often have a
`where Self: 'a` bound, which we can format on the same line.

Show an example that has bounds.

… decls

Suggested-by: Caleb Cartwright <[email protected]>

…-clause-same-line, r=compiler-errors

style-guide: Format single associated type `where` clauses on the same line

In particular, lifetime-generic associated types often have a
`where Self: 'a` bound, which we can format on the same line.

…ert-label, r=apiraino

[meta] Clarify prioritization alert

Apparently, there used to exist the label <kbd>I-nominated</kbd> judging from this entry:

https://github.com/rust-lang/rust/blob/8847bda592d940ae1f34d87d8cacdc09a9f787fa/triagebot.toml#L393

Since it was replaced with individual team labels, I think it makes sense to update the prioritization alert. Of course, it's not super important since the members of WG-prioritization already know that. This is just cleanup.

r? apiraino or wg-prioritization

Stabilize `seek_seek_relative`

This PR stabilizes `seek_seek_relative`:

```rust
// std::io::Seek

trait Seek {
    fn seek_relative(&mut self, offset: i64) -> Result<()>;
}
```

<br>

Tracking issue: rust-lang#117374.
Implementation PR: rust-lang#116750.

FCPs already completed in the tracking issue.

Closes rust-lang#117374.

r? libs-api

…lwoerister

Don't call `env::set_var` in `rustc_driver::install_ice_hook`

Modifying an environment variable would make the function unsafe to call.

…get-spec-json-path, r=jieyouxu

Migrate rustdoc target spec json path

Part of rust-lang#121876.

r? `@jieyouxu`