oslo-messaging-issue

Seeing following trace in solum-conductor, solum-worker, solum-deployer screens:

2016-05-19 15:58:35.319 25839 WARNING oslo_messaging.server [-] Possible hang: wait is waiting for stop to complete
2016-05-19 15:58:35.322 25839 DEBUG oslo_messaging.server [-] File "/usr/local/bin/solum-conductor", line 10, in <module>
    sys.exit(main())
  File "/opt/stack/solum/solum/cmd/conductor.py", line 46, in main
    server.serve()
  File "/opt/stack/solum/solum/common/rpc/service.py", line 86, in serve
    self._server.wait()
  File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/server.py", line 264, in wrapper
    log_after, timeout_timer)
  File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/server.py", line 163, in wait_for_completion
    msg, log_after, timeout_timer)
  File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/server.py", line 128, in _wait
    LOG.debug(''.join(traceback.format_stack()))
 _wait /usr/local/lib/python2.7/dist-packages/oslo_messaging/server.py:128

Versions of oslo,messaging and rabbitmq-server are as below:

oslo.messaging==5.1.0

Package: rabbitmq-server
Status: install ok installed
Priority: extra
Section: net
Installed-Size: 4753
Maintainer: Ubuntu Developers <email address hidden>
Architecture: all
Version: 3.2.4-1
Depends: erlang-nox (>= 1:13.b.3) | esl-erlang, adduser, logrotate
Conffiles:
 /etc/logrotate.d/rabbitmq-server ddaa633357e5f6ff9d7970c6d0a9acd8
 /etc/default/rabbitmq-server 7cc5216f193f6be1cb32c45021197b39
 /etc/init.d/rabbitmq-server 5d49d9839503d8912b13dc1123498257
Description: AMQP server written in Erlang
 RabbitMQ is an implementation of AMQP, the emerging standard for high
 performance enterprise messaging. The RabbitMQ server is a robust and
 scalable implementation of an AMQP broker.
Original-Maintainer: RabbitMQ Team <email address hidden>
Homepage: http://www.rabbitmq.com/