test_change_stream.TestCollectionChangeStream.test_raises_error_on_missing_id blocks forever in an infinite loop because of the server change (and resulting change stream spec issue) described in SERVER-37786 and SPEC-1214.

This issue also reminds me that our spec tests would be more robust if we added the try_next method proposed in PYTHON-1662. With try_next this test would fail immediately instead of blocking forever.