2013-09-28 03:18:41+0000 [-] while polling for changes
        Traceback (most recent call last):
          File "/home/builder/.virtualenvs/buildbot/local/lib/python2.7/site-packages/twisted/internet/defer.py", line 380, in callback
            self._startRunCallbacks(result)
          File "/home/builder/.virtualenvs/buildbot/local/lib/python2.7/site-packages/twisted/internet/defer.py", line 488, in _startRunCallbacks
            self._runCallbacks()
          File "/home/builder/.virtualenvs/buildbot/local/lib/python2.7/site-packages/twisted/internet/defer.py", line 575, in _runCallbacks
            current.result = callback(current.result, *args, **kw)
          File "/home/builder/.virtualenvs/buildbot/local/lib/python2.7/site-packages/twisted/internet/defer.py", line 1126, in gotResult
            _inlineCallbacks(r, g, deferred)
        --- <exception caught here> ---
          File "/home/builder/.virtualenvs/buildbot/local/lib/python2.7/site-packages/twisted/internet/defer.py", line 1068, in _inlineCallbacks
            result = result.throwExceptionIntoGenerator(g)
          File "/home/builder/.virtualenvs/buildbot/local/lib/python2.7/site-packages/twisted/python/failure.py", line 389, in throwExceptionIntoGenerator
            return g.throw(self.type, self.value, self.tb)
          File "/home/builder/.virtualenvs/buildbot/local/lib/python2.7/site-packages/buildbot/changes/gitpoller.py", line 109, in poll
            [self.repourl] + refspecs, path=self.workdir)
          File "/home/builder/.virtualenvs/buildbot/local/lib/python2.7/site-packages/twisted/internet/defer.py", line 575, in _runCallbacks
            current.result = callback(current.result, *args, **kw)
          File "/home/builder/.virtualenvs/buildbot/local/lib/python2.7/site-packages/buildbot/changes/gitpoller.py", line 238, in _convert_nonzero_to_failure
            % (code, stderr))
        exceptions.EnvironmentError: command failed with exit code 128: fatal: The remote end hung up unexpectedly