Build failed. https://zuul.opendev.org/t/openstack/buildset/86d9f86cf0d646c0a8a32d0b86d7e846 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e848c6ce131a4f099efe7d8440da4590 : SUCCESS in 4m 40s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b23ab5b67a8d4a58ad224404f008cf88 : SUCCESS in 5m 03s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/123ffb1914004998bcb4d59c848a699c : SUCCESS in 4m 42s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9ce90a125a704105bc4ca9cd5d6d318c : FAILURE in 3m 55s