Build failed. https://zuul.opendev.org/t/openstack/buildset/5d56780ace8c411aa2c3df6d5fe5a360 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8bd1444549ec4cc5a8bec93dd412428d : FAILURE in 3m 24s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/54dd2ba01ca64a0080e6935da5fadbe8 : SUCCESS in 4m 09s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/415844b99c424bc0b3c5d60b50bfa5d0 : SUCCESS in 4m 30s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9495d3d8d4cb4470a5c5b45cdac47738 : SUCCESS in 4m 20s