Error while checking action permissions.
Traceback (most recent call last):
  File "/home/drf/horizon/horizon/tables/base.py", line 1236, in _filter_action
    return action._allowed(request, datum) and row_matched
  File "/home/drf/horizon/horizon/tables/actions.py", line 702, in _allowed
    return super(BatchAction, self)._allowed(request, datum)
  File "/home/drf/horizon/horizon/tables/actions.py", line 137, in _allowed
    return self.allowed(request, datum)
  File "/home/drf/horizon/openstack_dashboard/dashboards/project/networks/subnets/tables.py", line 39, in allowed
    network = self.table._get_network()
  File "/home/drf/horizon/horizon/utils/memoized.py", line 90, in wrapped
    value = cache[key] = func(*args, **kwargs)
  File "/home/drf/horizon/openstack_dashboard/dashboards/project/networks/subnets/tables.py", line 132, in _get_network
    exceptions.handle(self.request, msg, redirect=self.failure_url)
  File "/home/drf/horizon/horizon/exceptions.py", line 326, in handle
    raise Http302(redirect)
Http302
............................................................................................................................Error while checking action permissions.
Traceback (most recent call last):
  File "/home/drf/horizon/horizon/tables/base.py", line 1236, in _filter_action
    return action._allowed(request, datum) and row_matched
  File "/home/drf/horizon/horizon/tables/actions.py", line 137, in _allowed
    return self.allowed(request, datum)
  File "/home/drf/horizon/openstack_dashboard/dashboards/project/volumes/snapshots/tables.py", line 46, in allowed
    if (snapshot._volume and
  File "/home/drf/horizon/openstack_dashboard/api/base.py", line 81, in __getattribute__
    return object.__getattribute__(self, attr)
AttributeError: 'VolumeSnapshot' object has no attribute '_volume'
....................DEBUG:cinderclient.client:Connection error: ('Connection aborted.', gaierror(-2, 'Name or service not known'))
................................................................S...................................................................................................................................................................................................................................................SSSSSSSSS.S
----------------------------------------------------------------------
Ran 1127 tests in 82.947s

OK (SKIP=11)
Destroying test database for alias 'default'...
Running flake8 ...
Tests completed successfully.