[877/1292] pinpoint.handlers.migrate_test.MigrateTest.testJobsMigrated failed unexpectedly:
  Traceback (most recent call last):
    File "C:\b\build\slave\Catapult_Windows_Tryserver\build\catapult\dashboard\dashboard\pinpoint\handlers\migrate_test.py", line 104, in testJobsMigrated
      self.assertEqual(j.state._new_field, 'new value')
  AttributeError: 'JobState' object has no attribute '_new_field'


Saw a bunch of these on windows on basically no-op changes.