Build failed. https://zuul.opendev.org/t/openstack/buildset/097e4860973a4c0baa26dbd2e7f1013c - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/77ac73013fbc499897c49ece6295542c : SUCCESS in 3m 32s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6860e2ef06ad4d45a74c7632960f0e46 : SUCCESS in 2m 53s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/37ce1531a0ef47a2837adea8788e5bdb : SUCCESS in 2m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b6b32c3da6ff4add850fc1da1faa8715 : FAILURE in 3m 57s