Build failed. https://zuul.opendev.org/t/openstack/buildset/f4036d2c7c1144ac962d15b05c90340a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a8f93dd7be794590be83e56bf21931bf : FAILURE in 7m 20s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b203b83e536c4a659326c6c29c14d275 : SUCCESS in 4m 44s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4170bc0217394d809933eb8e9eec7bfa : SUCCESS in 5m 26s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/86ccc9b661fd405ead10abd58051c1f9 : SUCCESS in 5m 39s