Build failed. https://zuul.opendev.org/t/openstack/buildset/972b1936a44a4e7c96a5ffa888f996ca - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e5d71ff650f148ccb917211269cafd14 : FAILURE in 3m 55s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5550e0ae35184d01b64c08a76be5c738 : SUCCESS in 4m 19s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f01667c9964545ebbbe0e5e87ce1d13a : SUCCESS in 3m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/836d48e71b4a460bab0a397aba6b941c : SUCCESS in 4m 19s