Auto merge of #4506 - withoutboats:alt-registries, r=alexcrichton
authorbors <bors@rust-lang.org>
Wed, 25 Oct 2017 17:09:02 +0000 (17:09 +0000)
committerbors <bors@rust-lang.org>
Wed, 25 Oct 2017 17:09:02 +0000 (17:09 +0000)
Alternative registries

An implementation of alt registries. Still needs to get tested more thoroughly but seems to work.


Trivial merge