Rollup of 5 pull requests#71171

Closed

Dylan-DPC-zz wants to merge 11 commits intorust-lang:masterfrom

Dylan-DPC-zz:rollup-v2gr7je

Commits on Apr 12, 2020

rustbuild: Remove LLD flavor workaround for MSVC
petrochenkov
committed

Commits on Apr 13, 2020

Update compiler_builtins to 0.1.27
tmiasko
committed

Commits on Apr 14, 2020

Provide better compiler output when using `?` on `Option` in fn returning `Result` and vice-versa
Duddino
committed

Commits on Apr 15, 2020