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<@U054MQUPL>: I am assuming this is a flaky test:
```
                     &gt;         self.assertNotRegexpMatches(line, r'^[WE].*')
                     E         AssertionError: Regexp matched: 'W0601 15:38:09.400330 22477 pailgun_service.py:69] encountered exception during SchedulerService.get_build_graph():' matches u'^[WE].*' in 'W0601 15:38:09.400330 22477 pailgun_service.py:69] encountered exception during SchedulerService.get_build_graph():'
```
Just saw it in a Travis build: <https://travis-ci.org/pantsbuild/pants/jobs/134462619>