2016-08-10 21:37:33,906 [salt.transport.ipc][ERROR   ][2589] Exception occurred in Subscriber while handling stream: Already reading
2016-08-10 21:37:33,912 [salt.log.setup   ][ERROR   ][2589] An un-handled exception was caught by salt's global exception handler:
AssertionError: Already reading
Traceback (most recent call last):
  File "/usr/bin/salt", line 10, in <module>
    salt_main()
  File "/usr/lib/python2.7/dist-packages/salt/scripts.py", line 468, in salt_main
    client.run()
  File "/usr/lib/python2.7/dist-packages/salt/cli/salt.py", line 158, in run
    for full_ret in cmd_func(**kwargs):
  File "/usr/lib/python2.7/dist-packages/salt/client/__init__.py", line 622, in cmd_cli
    **kwargs):
  File "/usr/lib/python2.7/dist-packages/salt/client/__init__.py", line 1294, in get_cli_event_returns
    **kwargs
  File "/usr/lib/python2.7/dist-packages/salt/client/__init__.py", line 978, in get_iter_returns
    for raw in jinfo_iter:
  File "/usr/lib/python2.7/dist-packages/salt/client/__init__.py", line 848, in get_returns_no_block
    raw = self.event.get_event(wait=0.01, tag=tag, match_type=match_type, full=True, no_block=True)
  File "/usr/lib/python2.7/dist-packages/salt/utils/event.py", line 579, in get_event
    ret = self._get_event(wait, tag, match_func, no_block)
  File "/usr/lib/python2.7/dist-packages/salt/utils/event.py", line 484, in _get_event
    raw = self.subscriber.read_sync(timeout=wait)
  File "/usr/lib/python2.7/dist-packages/salt/transport/ipc.py", line 664, in read_sync
    return ret_future.result()
  File "/usr/lib/python2.7/dist-packages/tornado/concurrent.py", line 215, in result
    raise_exc_info(self._exc_info)
  File "/usr/lib/python2.7/dist-packages/tornado/gen.py", line 230, in wrapper
    yielded = next(result)
  File "/usr/lib/python2.7/dist-packages/salt/transport/ipc.py", line 641, in _read_sync
    raise exc_to_raise  # pylint: disable=E0702
AssertionError: Already reading
2016-08-10 21:37:34,901 [salt.utils.parsers][WARNING ][939] Master received a SIGTERM. Exiting.