Build failed. https://zuul.opendev.org/t/openstack/buildset/94eef609893d40dc8c39a1550ebb10b2 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5f876421cbce4d9e855900f38dfd244f : FAILURE in 5m 09s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d53fffea91044951927f5584b56c3056 : SUCCESS in 3m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4a07724aae2340bbbe1914450e30b592 : SUCCESS in 4m 59s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8705b44bb47d47bc9a64a284098b2af3 : SUCCESS in 3m 28s