Rollup of 5 pull requests#149704

Merged

bors merged 12 commits intorust-lang:mainfrom

matthiaskrgr:rollup-u4zhw99

Dec 6, 2025

Commits on Sep 20, 2025

Implement `Allocator` for `&mut A` where `A: Allocator + ?Sized`
bluurryy
committed

Commits on Nov 4, 2025

add Option::into_flat_iter
Qelxiros
committed

Commits on Dec 5, 2025

Fix armv8r-none-eabihf tier
korken89
committed