Build failed. https://zuul.opendev.org/t/openstack/buildset/fda6bbae8da24a1c83430775a205ceea - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a503a60f1ccc4a71a80329a9434fe9be : FAILURE in 6m 21s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0fdae9c22a9d4761a301d34fb2d3d03b : SUCCESS in 5m 05s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3867bfc1bf414d64ab12c48a01d0a6fd : SUCCESS in 5m 16s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c974497a67e740588040c35e054b896b : SUCCESS in 5m 07s