Build failed. - build-openstack-sphinx-docs http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/oslo.concurrency/stable/ocata/build-openstack-sphinx-docs/52f2cc2/ : RETRY_LIMIT in 6m 40s - openstack-tox-py27 http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/oslo.concurrency/stable/ocata/openstack-tox-py27/6d5af6a/ : SUCCESS in 4m 46s