Rollup of 8 pull requests#98292

Merged

bors merged 27 commits intorust-lang:masterfrom

Dylan-DPC:rollup-hueb8tm

Jun 20, 2022

Commits on Jan 19, 2022

Implement `IterMut::as_mut_slice`
SkiFire13
committed

Commits on Mar 11, 2022

Commits on May 1, 2022

add `{Arc, Rc}::downcast_unchecked`
ibraheemdev
committed

Commits on May 4, 2022

Fix the generator example for `pin!()`
mbartlett21
authored

Commits on Jun 20, 2022