[2017/04/21 13:03:37.832] ======================================================================
 [2017/04/21 13:03:37.832] ERROR [0.018s]: test_exhaust_query_network_error_rs (tornado_tests.test_motor_client.MotorClientExhaustCursorTest)
 [2017/04/21 13:03:37.832] ----------------------------------------------------------------------
 [2017/04/21 13:03:37.832] Traceback (most recent call last):
 [2017/04/21 13:03:37.832]   File "/data/mci/4a2beb028f66c1a4935c81fe7a7db7e5/src/.eggs/mockupdb-1.1.2.post1-py2.7.egg/mockupdb/__init__.py", line 1035, in wrapper
 [2017/04/21 13:03:37.832]     return meth(self, *args, **kwargs)
 [2017/04/21 13:03:37.832]   File "/data/mci/4a2beb028f66c1a4935c81fe7a7db7e5/src/.eggs/mockupdb-1.1.2.post1-py2.7.egg/mockupdb/__init__.py", line 1155, in stop
 [2017/04/21 13:03:37.833]     for sock in self._server_socks:
 [2017/04/21 13:03:37.833]   File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/weakref.py", line 327, in iterkeys
 [2017/04/21 13:03:37.833]     for wr in self.data.iterkeys():
 [2017/04/21 13:03:37.833] RuntimeError: dictionary changed size during iteration