Build failed. https://zuul.opendev.org/t/openstack/buildset/7779a8abe8c449ce9d265cc7d392d582 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/56f06a56f04f42daac0bf31f4fc16d55 : FAILURE in 3m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2612316db4f34772bc05025631f4830d : SUCCESS in 3m 11s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/087d81dfd8da48e6aa7e3eeb5b27bf5a : SUCCESS in 3m 17s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/68be8a2982434fdeaf1b5b6398a9fe3c : SUCCESS in 3m 25s