Rollup of 4 pull requests#90424

Merged

bors merged 9 commits intorust-lang:masterfrom

matthiaskrgr:rollup-jezzu4f

Oct 31, 2021

Commits on Oct 11, 2021

Add #[must_use] to thread::Builder
jkugelman
committed

Commits on Oct 12, 2021

Update library/std/src/thread/mod.rs

jkugelman
and
joshtriplett
authored

Commits on Oct 15, 2021

Add #[must_use] to remaining alloc functions

jkugelman
authored and
Kugelman, John R
committed

Commits on Oct 29, 2021