Traceback (most recent call last):
 File "/home/jenkins/venv-nailgun-tests-2.9/local/lib/python2.7/site-packages/proboscis/case.py", line 296, in testng_method_mistake_capture_func
   compatability.capture_type_error(s_func)
 File "/home/jenkins/venv-nailgun-tests-2.9/local/lib/python2.7/site-packages/proboscis/compatability/exceptions_2_6.py", line 27, in capture_type_error
   func()
 File "/home/jenkins/venv-nailgun-tests-2.9/local/lib/python2.7/site-packages/proboscis/case.py", line 350, in func
   func(test_case.state.get_state())
 File "/home/jenkins/workspace/8.0.custom_system_test/fuelweb_test/helpers/decorators.py", line 80, in wrapper
   result = func(*args, **kwargs)
 File "/home/jenkins/workspace/8.0.custom_system_test/fuelweb_test/tests/test_ceph.py", line 466, in ceph_rados_gw
   self.env.d_env.nodes().slaves[:6])
 File "/home/jenkins/workspace/8.0.custom_system_test/fuelweb_test/models/environment.py", line 146, in bootstrap_nodes
   sync_time(self.d_env, devops_nodes)
 File "/home/jenkins/venv-nailgun-tests-2.9/local/lib/python2.7/site-packages/devops/helpers/retry.py", line 27, in wrapper
   return func(*args, **kwargs)
 File "/home/jenkins/venv-nailgun-tests-2.9/local/lib/python2.7/site-packages/devops/helpers/ntp.py", line 35, in sync_time
   with GroupNtpSync(env, node_names) as g_ntp:
 File "/home/jenkins/venv-nailgun-tests-2.9/local/lib/python2.7/site-packages/devops/helpers/ntp.py", line 79, in __init__
   ntp = Ntp.get_ntp(get_node_remote(env, node_name),
 File "/home/jenkins/venv-nailgun-tests-2.9/local/lib/python2.7/site-packages/devops/helpers/helpers.py", line 150, in get_node_remote
   name=node_name).interfaces[0].mac_address)
 File "/home/jenkins/venv-nailgun-tests-2.9/local/lib/python2.7/site-packages/devops/models/environment.py", line 65, in get_node
   return self.node_set.get(*args, **kwargs)
 File "/home/jenkins/venv-nailgun-tests-2.9/local/lib/python2.7/site-packages/django/db/models/manager.py", line 151, in get
   return self.get_queryset().get(*args, **kwargs)
 File "/home/jenkins/venv-nailgun-tests-2.9/local/lib/python2.7/site-packages/django/db/models/query.py", line 310, in get
   self.model._meta.object_name)