Build failed. https://zuul.opendev.org/t/openstack/buildset/e0a69b8f673e4414bb9b8feef35bfc9b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6207c409a0ec4e1c86ccaa5cd6a292cd : SUCCESS in 3m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6fca7b0c7aaa4892876b24a61d0856fe : FAILURE in 2m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6a24d880940a4e8e961b0c4f04e130ac : SUCCESS in 3m 37s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/852a3561783d4bb0b2a90eccfca30ce2 : FAILURE in 2m 29s