In fact:
```
buildbot.test.integration.test_clean_shutdown.RunMaster.test_clean_shutdown2 ... [ERROR]Traceback (most recent call last):
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/bin/trial", line 18, in <module>
    run()
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/scripts/trial.py", line 514, in run
    test_result = trialRunner.run(suite)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/runner.py", line 782, in run
    return self._runWithoutDecoration(test, self._forceGarbageCollection)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/runner.py", line 809, in _runWithoutDecoration
    run()
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/runner.py", line 804, in <lambda>
    run = lambda: suite.run(result)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/runner.py", line 273, in run
    TestSuite.run(self, result)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/_asyncrunner.py", line 68, in run
    test(result)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/_asyncrunner.py", line 56, in __call__
    return self.run(result)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/runner.py", line 177, in run
    super(LoggedSuite, self).run(result)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/_asyncrunner.py", line 68, in run
    test(result)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/_asyncrunner.py", line 56, in __call__
    return self.run(result)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/runner.py", line 150, in run
    test(result)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/_asyncrunner.py", line 56, in __call__
    return self.run(result)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/runner.py", line 150, in run
    test(result)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/_asyncrunner.py", line 56, in __call__
    return self.run(result)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/runner.py", line 150, in run
    test(result)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/_asynctest.py", line 113, in __call__
    return self.run(*args, **kwargs)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/_synctest.py", line 917, in run
    _collectWarnings(self._warnings.append, self._runFixturesAndTest, result)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/_synctest.py", line 182, in _collectWarnings
    result = f(*args, **kwargs)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/_asynctest.py", line 294, in _runFixturesAndTest
    self._wait(d)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/trial/_asynctest.py", line 388, in _wait
    reactor.run()
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/internet/base.py", line 1191, in run
    self.startRunning(installSignalHandlers=installSignalHandlers)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/internet/base.py", line 1171, in startRunning
    ReactorBase.startRunning(self)
  File "/home/dustin/code/buildbot/t/buildbot/sandbox/lib/python2.7/site-packages/twisted/internet/base.py", line 683, in startRunning
    raise error.ReactorNotRestartable()
twisted.internet.error.ReactorNotRestartable
```