Build failed. https://zuul.opendev.org/t/openstack/buildset/3066b70a340a4b07ad48f103c210a5c8 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ee69c373526f4966ac671058b7c5e748 : SUCCESS in 4m 17s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/22244e1ed6b24a36be230aaaaae89d25 : SUCCESS in 5m 07s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/739ab120485145b2b97d5bdddcec80f0 : SUCCESS in 5m 25s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c277e0bb7b644c8e9554c72ffc485271 : FAILURE in 4m 41s