Build failed. https://zuul.opendev.org/t/openstack/buildset/76ebcaa2876a4087b8a79f067da9a49f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0f59d088d7db47189aabdebf3cfbdd38 : SUCCESS in 5m 02s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a66aa84ce42f4f628ac23bb8c1d06eca : SUCCESS in 6m 00s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f0411471a07846c69824ad9a399296a5 : SUCCESS in 5m 37s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4a34334a2ef048ce801ba9dfb908ab3b : FAILURE in 5m 21s