Build failed. - build-openstack-sphinx-docs http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/oslo.concurrency/stable/pike/build-openstack-sphinx-docs/09d437a/ : RETRY_LIMIT in 3m 26s - openstack-tox-py27 http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/oslo.concurrency/stable/pike/openstack-tox-py27/df9a5aa/ : SUCCESS in 3m 50s