Build failed. https://zuul.opendev.org/t/openstack/buildset/efc1e4c304494613a7e6258e5c79580f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/eddc9a9d94cd4cb08103f40bd0d3536f : FAILURE in 4m 16s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/593a2fc2b3134114a3b9e98ffe4aec7f : SUCCESS in 3m 43s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/26059395473145f0b271e45a0f7c453d : SUCCESS in 3m 32s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f72965140bd74d3faa32a31c9266911a : SUCCESS in 3m 58s