Rollup of 7 pull requests#63998

Merged

bors merged 18 commits intorust-lang:masterfrom

Centril:rollup-pfuwxz3

Aug 29, 2019

Commits on Aug 25, 2019

Commits on Aug 27, 2019

Commits on Aug 28, 2019

Update rust-installer to limit memory use
cuviper
committed

Commits on Aug 29, 2019