Build failed. https://zuul.opendev.org/t/openstack/buildset/8e5fb6d76af44de29f3514a780647bca - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/08a4619835bb4a4e95356cebf4ca7dcd : SUCCESS in 3m 16s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6002fdc489284d0b8e8df7281fb16647 : SUCCESS in 3m 49s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c3e94be41e3e4b46bd9b19309f7b8b53 : SUCCESS in 4m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f52ca8ae1ea34760b2895702581db1d8 : FAILURE in 3m 26s