[beta] Rollup backports#54484

Merged

bors merged 3 commits intorust-lang:betafrom

pietroalbini:beta-backports

Sep 22, 2018

Commits on Sep 22, 2018

rustbuild: drop color handling

Keruspe
authored and
pietroalbini
committed
avoid leaking host details in proc macro metadata decoding

arielb1
authored and
pietroalbini
committed
Ignore new test on Windows

alexcrichton
authored and
pietroalbini
committed