tree 81949a757f7682b644e161c4b1c1a3333000d618
parent 36e8cc20ee5c0205a802ad68cf51604e4ad000fa
author Matt Farina <matt@mattfarina.com> 1463758899 -0400
committer Matt Farina <matt@mattfarina.com> 1463758899 -0400

Fixed cache of concurrent fetching collision

There are cases, such as a dependency tree inporting multiple versions
of gopkg.in/yaml that are the same repo where vcs fetching errors
can happen.

Added a repo lock so a repo is only concurrently fetched one
at a time.