Build failed. https://zuul.opendev.org/t/openstack/buildset/b7c459eea4a344b1b22b4c26a5e81cc0 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6b6ac8c0abbe4e68861d3717a7673ed8 : FAILURE in 6m 30s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f7cb39a697354f5196c77046b150c16e : SUCCESS in 4m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2a436df6b24b482fb12de50b2a5d381a : SUCCESS in 5m 04s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ad5b83b5188a4389b9517e4e89cc7600 : SUCCESS in 5m 54s