Build failed. https://zuul.opendev.org/t/openstack/buildset/9b7f5a13da8e473faae28b7dc76bf717 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8530bbe93bff47c9aa125d3aa145c22b : FAILURE in 5m 24s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ef4d7c5988c043f990f3594746a84f65 : FAILURE in 5m 13s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0ce86f59e5ca49e8a100577ce0f40b29 : FAILURE in 5m 57s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/11871cfa998a4199a29de52f01bb2ad6 : FAILURE in 4m 02s