Build failed. https://zuul.opendev.org/t/openstack/buildset/b14546891fc84181864a8342a9a8f6db - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7c96aabbf7054e31b4ef1a2bef659eaa : SUCCESS in 4m 00s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3c582b564ae8401d8136a12938ebbaac : FAILURE in 2m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/940782a6d32a4c57ac4b24e67cca1c0a : FAILURE in 4m 07s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/6ad9bad9ae454601af844ccc8bdc6495 : FAILURE in 2m 23s