Build failed. https://zuul.opendev.org/t/openstack/buildset/5eb8011fd1c14d838bc8585abafebafd - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/54274e606159434f95313aecf18ca435 : SUCCESS in 3m 53s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/50a7e4cafb0d483a924c9192171c2506 : FAILURE in 4m 03s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3cf073dfa60e4c03a45f4736b208efc6 : SUCCESS in 4m 53s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9a9ad31136144a7381911c351bbcc229 : SUCCESS in 5m 25s