Rollup of 6 pull requests#68052

Closed

Centril wants to merge 18 commits into

rust-lang:masterfrom

Centril:rollup-xlktwp3

Commits on Jan 6, 2020

Relax the Sized bounds on Pin::map_unchecked(_mut)
Thomasdezeeuw
committed

Commits on Jan 9, 2020