Build failed. https://zuul.opendev.org/t/openstack/buildset/2c819f034fe044ffba64a278d30dfd6a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ee84b58d609e460d8aedb1a8d93a5997 : FAILURE in 7m 28s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a168d5b56cd147ca9533f9f18ecad47a : FAILURE in 7m 11s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f832d8a135ce4b95a6afccf018ad62e0 : FAILURE in 4m 50s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c1356c16ba7f489299f9a7238915ef57 : FAILURE in 5m 11s