Build failed. https://zuul.opendev.org/t/openstack/buildset/501c7b8c25014ce5b38215ad12dbaafb - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/00afe7a494c64850a23ea9487ffa4314 : FAILURE in 6m 39s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/72db98c91c0a45de915a113db7db9648 : SUCCESS in 11m 43s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/779f296049034e1a90b72370e8e03cad : SUCCESS in 6m 05s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b1cb1621d80b422fabecb348376fb9e4 : SUCCESS in 5m 39s