Build failed. https://zuul.opendev.org/t/openstack/buildset/6d23f2983489400690318aaa6ae0b432 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a1b08f476327492f98fb43e84840de0d : FAILURE in 3m 06s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c1393249d4d2441789b7942553865b73 : SUCCESS in 3m 09s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b8c7c76260fa443bbaad6d3f86b7a0c0 : SUCCESS in 2m 54s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/032c1f9ecf674d76821fdcdaa32ff1e6 : SUCCESS in 3m 22s