[beta] Update cargo and backport #49612#49640

Merged

bors merged 2 commits intorust-lang:betafrom matklad:cargo-backport

Apr 5, 2018

+2-2

Commits on Apr 4, 2018

[beta] Update cargo
matklad
committed

Commits on Apr 5, 2018

Fix "since" version for getpid feature.

tmccombs
authored and
kennytm
committed