Build failed. https://zuul.opendev.org/t/openstack/buildset/507636b4d27c44469a6a5e6853256aaa - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1ab027f1a55645beba70eda6df2c34e3 : FAILURE in 3m 12s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/51b94b9aa4c747afb5c554eba1d1d4e7 : SUCCESS in 3m 18s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1d8f212ec50b48edadea0755756c7d4f : SUCCESS in 3m 09s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/6420e77248a5414195c01d77b11f2292 : SUCCESS in 3m 24s