Rollup of 8 pull requests#90434

Merged

bors merged 19 commits intorust-lang:masterfrom

matthiaskrgr:rollup-xbn393a

Oct 31, 2021

Commits on Oct 1, 2021

Add paragraph to ControlFlow docs to menion it works with the ? operator (#88715)
chrismit3s
committed

Commits on Oct 2, 2021

Fix typo and change a word in ControlFlow docs

chrismit3s
and
r00ster
authored

Commits on Oct 8, 2021

Stabilize `is_symlink()` for `Metadata` and `Path`
maxwase
committed

Commits on Oct 12, 2021

Commits on Oct 13, 2021

Add #[must_use] to expensive computations
jkugelman
committed

Commits on Oct 20, 2021

Stabilize `option_result_unwrap_unchecked`
ojeda
committed

Commits on Oct 30, 2021

Commits on Oct 31, 2021