Build failed. https://zuul.opendev.org/t/openstack/buildset/b4e8db5eea6b4f9fa994f3057192b61c - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/14dd684727934608bfd7b73177c6a717 : SUCCESS in 3m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/61cfd36f6f084518a83971d1ba4bcb93 : SUCCESS in 5m 51s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e79bc3bd812849688d694545a87951a7 : SUCCESS in 5m 03s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f6000ba9f2034f4bb6dff8b3214d6638 : FAILURE in 4m 37s