Error sometimes with gpm install on existing projects #35
Description
I just noticed this a few times today. It looks like sometimes a race condition happens:
>> Setting github.com/lann/builder to version
# cd /Users/mbutcher/Code/Go/src/bitbucket.org/mobiplug/sugarmill/.godeps/src/github.com/lann/builder; git checkout master
fatal: Unable to create '/Users/mbutcher/Code/Go/src/bitbucket.org/mobiplug/sugarmill/.godeps/src/github.com/lann/builder/.git/index.lock': File exists.
If no other git process is currently running, this probably means a
git process crashed in this repository earlier. Make sure no other git
process is running and remove the file manually to continue.
package github.com/lann/squirrel
imports github.com/lann/builder: exit status 128
I am having trouble reproducing this, but every once in a while I see the same error (on different projects each time).