Auto merge of #5407 - klausi:fixed-minimal-versions, r=matklad
authorbors <bors@rust-lang.org>
Sun, 22 Apr 2018 19:11:37 +0000 (19:11 +0000)
committerbors <bors@rust-lang.org>
Sun, 22 Apr 2018 19:11:37 +0000 (19:11 +0000)
fix(dependendies): Bump minimal dependency versions so that cargo successfully builds with those

Spin-off from #5275 .

Just bump the minimum dependency versions here, we are developing CI testing in #5275 .


Trivial merge