Rollup of 6 pull requests#95650

Closed

Dylan-DPC wants to merge 25 commits intorust-lang:masterfrom

Dylan-DPC:rollup-ss25kvs

Commits on Mar 29, 2022

Commits on Mar 30, 2022

Synchronize asynchronous pipe reads and writes
ChrisDenton
committed

Commits on Apr 2, 2022

Fix late-bound ICE in unsized return suggestion
compiler-errors
committed

Commits on Apr 3, 2022

explicitly distinguish pointer::addr and pointer::expose_addr
RalfJung
committed

Commits on Apr 4, 2022