Rollup of 5 pull requests#71549

Merged

bors merged 13 commits into

rust-lang:masterfrom

Dylan-DPC-zz:rollup-j6jlp9l

Apr 25, 2020

Commits on Apr 20, 2020

Ignore -Zprofile when building compiler_builtins
Amanieu
committed

Commits on Apr 23, 2020

Commits on Apr 24, 2020