Build failed. - build-openstack-sphinx-docs http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/oslo.concurrency/stable/pike/build-openstack-sphinx-docs/7b2cc21/ : RETRY_LIMIT in 3m 25s - openstack-tox-py27 http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/oslo.concurrency/stable/pike/openstack-tox-py27/4c748e4/ : SUCCESS in 4m 33s