Auto merge of #3010 - steveklabnik:gh3001, r=alexcrichton
authorbors <bors@rust-lang.org>
Wed, 17 Aug 2016 19:02:10 +0000 (12:02 -0700)
committerGitHub <noreply@github.com>
Wed, 17 Aug 2016 19:02:10 +0000 (12:02 -0700)
Revert to previous semver version.

As it turns out, people were taking advantage of bugginess in semver, so
we can't do this upgrade yet.

Fixes #3001


Trivial merge