buildbot/buildbot — pull request #649 by jgonzalezmendez (2013-03-05 08:26:04+00:00)
Title: Ignore std error on version discovery

git may print warnings out that can confuse the parsing, and std error
could never provide a trustworthy errorn number anyway. (In my case, it
was providing a tag name which provided a valid but undesirable match,
so I was ending up with the wrong version number)