Rollup of 6 pull requests#63052

Closed

Centril wants to merge 29 commits intorust-lang:masterfrom

Centril:rollup-25wl6pf

Commits on Jul 19, 2019

rustc: Compile the `fmt_macros` crate as an rlib
alexcrichton
committed

Commits on Jul 24, 2019

Re-enable assertions in PPC dist builder
mati865
committed

Commits on Jul 27, 2019