Build failed. https://zuul.opendev.org/t/openstack/buildset/bde897270a6c4db3a07ab0cd3a11d16b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/567facca16da427e81afd2e323c67710 : FAILURE in 3m 50s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e851087635294a2a9c2a43026f7699be : SUCCESS in 3m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/738f39bf72764bdf9412dab7caa22149 : SUCCESS in 3m 37s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7da67b9941f9430d97aada90d4551a5d : SUCCESS in 4m 05s