[2019/01/31 10:28:49.406] FAIL [0.055s]: test_ensure_index_threaded (test_legacy_api.TestLegacy)
 [2019/01/31 10:28:49.406] ----------------------------------------------------------------------
 [2019/01/31 10:28:49.406] Traceback (most recent call last):
 [2019/01/31 10:28:49.406]   File "/data/mci/77aaf195cbba38e3dc6e0bc85d75054b/src/test/test_legacy_api.py", line 1291, in test_ensure_index_threaded
 [2019/01/31 10:28:49.406]     self.assertEqual(index_doc, first)
 [2019/01/31 10:28:49.406] AssertionError: {'_id[250 chars]ion'}, 'foo2_1': {'v': 2, 'key': [('foo2', 1)][43 chars]on'}} != {'_id[250 chars]ion'}}
 [2019/01/31 10:28:49.406]   {'_id_': {'key': [('_id', 1)],
 [2019/01/31 10:28:49.406]             'ns': 'pymongo_test.threaded_index_creation',
 [2019/01/31 10:28:49.406]             'v': 2},
 [2019/01/31 10:28:49.406]    'foo0_1': {'key': [('foo0', 1)],
 [2019/01/31 10:28:49.406]               'ns': 'pymongo_test.threaded_index_creation',
 [2019/01/31 10:28:49.406]               'v': 2},
 [2019/01/31 10:28:49.406]    'foo1_1': {'key': [('foo1', 1)],
 [2019/01/31 10:28:49.406]               'ns': 'pymongo_test.threaded_index_creation',
 [2019/01/31 10:28:49.406] -             'v': 2},
 [2019/01/31 10:28:49.406] -  'foo2_1': {'key': [('foo2', 1)],
 [2019/01/31 10:28:49.406] -             'ns': 'pymongo_test.threaded_index_creation',
 [2019/01/31 10:28:49.406]               'v': 2}}
 [2019/01/31 10:28:49.406]

 [2019/01/31 10:28:49.406] FAIL [0.429s]: test_ensure_unique_index_threaded (test_legacy_api.TestLegacy)
 [2019/01/31 10:28:49.406] ----------------------------------------------------------------------
 [2019/01/31 10:28:49.406] Traceback (most recent call last):
 [2019/01/31 10:28:49.406]   File "/data/mci/77aaf195cbba38e3dc6e0bc85d75054b/src/test/test_legacy_api.py", line 1351, in test_ensure_unique_index_threaded
 [2019/01/31 10:28:49.406]     self.assertEqual(10001, coll.count())
 [2019/01/31 10:28:49.406] AssertionError: 10001 != 10018