Build failed. https://zuul.opendev.org/t/openstack/buildset/e5842fbacb6a4d56bd41edeaa09c6c49 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/494bc054e4b24ff09ac5fb5a68f2003f : SUCCESS in 4m 12s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/16751cbf39dd42848701a82275242f98 : SUCCESS in 4m 12s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e48eacc5b44d4e37bd4ae85421190240 : SUCCESS in 3m 50s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/546d6b1ff6d44bed9fa4e42f0913d322 : FAILURE in 3m 50s