Build failed. https://zuul.opendev.org/t/openstack/buildset/93ef542a4a46431cb77bae4dac5c77f0 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d4c55c25cb46482688be07bce2f65236 : SUCCESS in 3m 25s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/cee892f91d29490b9128516bee78d443 : FAILURE in 3m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/40c0c0ed176742e8b10d4699c569cb6d : SUCCESS in 3m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/fc6641f2c099419caa2e5af0cc320723 : SUCCESS in 4m 18s