Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/twisted/internet/defer.py", line 380, in callback
    self._startRunCallbacks(result)
  File "/usr/lib64/python2.7/site-packages/twisted/internet/defer.py", line 488, in _startRunCallbacks
    self._runCallbacks()
  File "/usr/lib64/python2.7/site-packages/twisted/internet/defer.py", line 575, in _runCallbacks
    current.result = callback(current.result, *args, **kw)
  File "/usr/lib64/python2.7/site-packages/twisted/internet/defer.py", line 1126, in gotResult
    _inlineCallbacks(r, g, deferred)
--- <exception caught here> ---
  File "/usr/lib64/python2.7/site-packages/twisted/internet/defer.py", line 1068, in _inlineCallbacks
    result = result.throwExceptionIntoGenerator(g)
  File "/usr/lib64/python2.7/site-packages/twisted/python/failure.py", line 389, in throwExceptionIntoGenerator
    return g.throw(self.type, self.value, self.tb)
  File "/usr/lib64/python2.7/site-packages/buildbot/steps/transfer.py", line 482, in uploadSources
    result = yield self.startUpload(source, masterdest)
  File "/usr/lib64/python2.7/site-packages/twisted/internet/defer.py", line 575, in _runCallbacks
    current.result = callback(current.result, *args, **kw)
  File "/usr/lib64/python2.7/site-packages/buildbot/steps/transfer.py", line 440, in checkStat
    s = cmd.updates['stat'][-1]
exceptions.KeyError: 'stat'