This is a very infrequent failure, seemingly due to a race condition in the test case. The failure seems to only occur testing against a sharded cluster.
[2017/03/17 07:32:33.333] ====================================================================== [2017/03/17 07:32:33.333] FAIL: test_standalone_error (test_heartbeat_monitoring.TestHeartbeatMonitoring) [2017/03/17 07:32:33.333] ---------------------------------------------------------------------- [2017/03/17 07:32:33.333] Traceback (most recent call last): [2017/03/17 07:32:33.333] File "/data/mci/3a45a331ba123c620e62b2687c7ec751/src/test/test_heartbeat_monitoring.py", line 134, in test_standalone_error [2017/03/17 07:32:33.333] self.create_mock_monitor(responses, uri, expected_results) [2017/03/17 07:32:33.333] File "/data/mci/3a45a331ba123c620e62b2687c7ec751/src/test/test_heartbeat_monitoring.py", line 93, in create_mock_monitor [2017/03/17 07:32:33.333] "publish all events", timeout=15) [2017/03/17 07:32:33.333] File "/data/mci/3a45a331ba123c620e62b2687c7ec751/src/test/utils.py", line 305, in wait_until [2017/03/17 07:32:33.333] raise AssertionError("Didn't ever %s" % success_description) [2017/03/17 07:32:33.333] AssertionError: Didn't ever publish all events