#6836 TestProcessMetadataManager.test_deadline_until is flaky Issue created by cosmicexplorer Failed on #6800: https://travis-ci.org/pantsbuild/pants/jobs/461128648. A solved, probably unrelated error in this test can be seen at #5417. Can this test expand its upper and lower bounds here? Since the error is about receiving 3 instead of 4-6 messages, this seems like prime flakiness material.

==================== FAILURES ====================
_ TestProcessMetadataManager.test_deadline_until _

self = <pants_test.pantsd.test_process_manager.TestProcessMetadataManager testMethod=test_deadline_until>

    def test_deadline_until(self):
      with self.assertRaises(ProcessMetadataManager.Timeout):
        with self.captured_logging(<http://logging.INFO|logging.INFO>) as captured:
          self.pmm._deadline_until(lambda: False, 'the impossible', timeout=.5, info_interval=.1)
      self.assertTrue(4 <= len(captured.infos()) <= 6,
>                     'Expected between 4 and 6 infos, got: {}'.format(captured.infos()))
E     AssertionError: False is not true : Expected between 4 and 6 infos, got: ['pants.pantsd.process_manager: waiting for the impossible...', 'pants.pantsd.process_manager: waiting for the impossible...', 'pants.pantsd.process_manager: waiting for the impossible...']

pants_test/pantsd/test_process_manager.py:147: AssertionError
--------------- Captured log call ----------------
process_manager.py         138 INFO     waiting for the impossible...
process_manager.py         138 INFO     waiting for the impossible...
process_manager.py         138 INFO     waiting for the impossible...
 generated xml file: /home/travis/build/pantsbuild/pants/.pants.d/test/pytest/tests.python.pants_test.pantsd.process_manager/junitxml/TEST-tests.python.pants_test.pantsd.process_manager.xml

Any approach to more robustly test this sort of ipc seems like it could be dealt with at least partially in a similar way to any code that e.g. retries network requests (and there's no reason this code would need to only be usable in tests). pantsbuild/pants