Build failed. https://zuul.opendev.org/t/openstack/buildset/e01fc5925b35404cad0ce0c2f739fccb - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/80a14def9bdb40ba82f4ed36d7f19ba7 : SUCCESS in 3m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8cce5057895349ac8b84924b80947750 : SUCCESS in 4m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a1477c495dd641d29b06620223f63a01 : SUCCESS in 5m 07s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d580c7417fdf4c1d99c0fa45b2bdf422 : FAILURE in 3m 48s