Build failed. https://zuul.opendev.org/t/openstack/buildset/7a569dc62fa44b59945eb6a8ed8cf6a3 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6c647a4d73954287af9d29c71fb758f2 : SUCCESS in 4m 06s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0e6c96d6feca4808b21cfe28364f8f60 : SUCCESS in 4m 14s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1d20babf7b2643c89e0407ef3ea1ed55 : SUCCESS in 3m 49s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d60850739e76474f8569777fba8310c1 : FAILURE in 4m 04s