[2018/12/06 16:36:10.522] 
 [2018/12/06 16:33:08.160] test_failover (test_mongos_load_balancing.TestMongosLoadBalancing) ... Exception in thread Thread-277:
 [2018/12/06 16:33:08.160] Traceback (most recent call last):
 [2018/12/06 16:33:08.160]   File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner
 [2018/12/06 16:33:08.160]     self.run()
 [2018/12/06 16:33:08.160]   File "/usr/lib/python2.7/threading.py", line 754, in run
 [2018/12/06 16:33:08.160]     self.__target(*self.__args, **self.__kwargs)
 [2018/12/06 16:33:08.160]   File "/data/mci/f05e6bda666f8e17cf0ae655b32d9893/src/test/test_mongos_load_balancing.py", line 125, in f
 [2018/12/06 16:33:08.160]     client.db.command('ismaster')
 [2018/12/06 16:33:08.160]   File "/data/mci/f05e6bda666f8e17cf0ae655b32d9893/src/pymongo/database.py", line 611, in command
 [2018/12/06 16:33:08.160]     read_preference, session) as (sock_info, slave_ok):
 [2018/12/06 16:33:08.160]   File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__
 [2018/12/06 16:33:08.160]     return self.gen.next()
 [2018/12/06 16:33:08.160]   File "/data/mci/f05e6bda666f8e17cf0ae655b32d9893/src/pymongo/mongo_client.py", line 1151, in _socket_for_reads
 [2018/12/06 16:33:08.160]     with self._get_socket(server) as sock_info:
 [2018/12/06 16:33:08.160]   File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__
 [2018/12/06 16:33:08.160]     return self.gen.next()
 [2018/12/06 16:33:08.160]   File "/data/mci/f05e6bda666f8e17cf0ae655b32d9893/src/pymongo/mongo_client.py", line 1080, in _get_socket
 [2018/12/06 16:33:08.160]     with server.get_socket(self.__all_credentials) as sock_info:
 [2018/12/06 16:33:08.160]   File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__
 [2018/12/06 16:33:08.160]     return self.gen.next()
 [2018/12/06 16:33:08.160]   File "/data/mci/f05e6bda666f8e17cf0ae655b32d9893/src/test/pymongo_mocks.py", line 47, in get_socket
 [2018/12/06 16:33:08.160]     raise AutoReconnect('mock error')
 [2018/12/06 16:33:08.160] AutoReconnect: mock error
 [2018/12/06 16:33:08.164] FAIL
.
.
.
.
 [2018/12/06 16:36:10.522] FAIL: test_failover (test_mongos_load_balancing.TestMongosLoadBalancing)
 [2018/12/06 16:36:10.522] ----------------------------------------------------------------------
 [2018/12/06 16:36:10.522] Traceback (most recent call last):
 [2018/12/06 16:36:10.522]   File "/data/mci/f05e6bda666f8e17cf0ae655b32d9893/src/test/test_mongos_load_balancing.py", line 136, in test_failover
 [2018/12/06 16:36:10.522]     self.assertEqual(nthreads, len(passed))
 [2018/12/06 16:36:10.522] AssertionError: 10 != 9