Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/54fb28e6b37d4b6c836a50cee05ac13d : SUCCESS in 7m 17s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/49c9af04f744448699463b0d76d70581 : FAILURE in 5m 53s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/05cdc5c8f2bf47d78d47826e1a78d527 : FAILURE in 6m 52s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/070286be70dd45dd996f937428476054 : FAILURE in 7m 20s