Build failed. https://zuul.opendev.org/t/openstack/buildset/9d13c759d9cf4eb99941c6f074ff13e6 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1a4f94594239401cb9a727f26542b055 : FAILURE in 4m 11s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2529939c012144f28866929524fafc83 : FAILURE in 4m 29s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8380f4f5cead4479aefae23a203ec08f : FAILURE in 5m 07s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e4a5656c64bd4b8187f550f45d109542 : FAILURE in 4m 41s