Rollup of 8 pull requests#52570

Closed

emilyalbini wants to merge 28 commits intorust-lang:masterfrom

emilyalbini:rollup

Commits on Jul 18, 2018

rustc: Remove a workaroudn in ThinLTO fixed upstream
alexcrichton
committed

Commits on Jul 19, 2018

Commits on Jul 20, 2018