Traceback (most recent call last):
  File ".../neo/tests/__init__.py", line 426, in tearDown
    self._tearDown(self._outcome.old_success if six.PY3 else
  File ".../neo/tests/functional/testMaster.py", line 32, in _tearDown
    self.neo.stop()
  File ".../neo/tests/functional/__init__.py", line 479, in stop
    raise NodeProcessError('\n'.join(error_list))
neo.tests.functional.NodeProcessError: 'neomaster' ... exited with status 255
...
Traceback (most recent call last):
  File ".../neo/tests/functional/testClient.py", line 49, in setUp
    NEOFunctionalTest.setUp(self)
  File ".../neo/tests/functional/__init__.py", line 721, in setUp
    self.__patch.apply()
  File ".../neo/tests/__init__.py", line 772, in apply
    assert not self.applied
AssertionError