Build failed. https://zuul.opendev.org/t/openstack/buildset/b62be8c7ee2d4b73803cdfd3f70cf56f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6a885edb1d6f4881a7142b7ee2d5a23a : FAILURE in 4m 27s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1e152c401588417bb85706a52418ba20 : FAILURE in 5m 08s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4fa586d64af24553a4599d4ab30979d0 : FAILURE in 4m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ee14ea87686e430d86a66cb9c96d871b : FAILURE in 5m 59s