Build failed. https://zuul.opendev.org/t/openstack/buildset/6ba0fba2f91640a9adc22c673670459f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/748fc4ea4f8946d9acf712309ab36ecc : SUCCESS in 3m 40s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4b585f3aaf4d415ca01be4915e5ab17a : FAILURE in 3m 33s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f6973101064f4ab6af3d5fe83a24b50e : SUCCESS in 3m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e66ce4cc605a4b6bbcb76e703342a609 : SUCCESS in 5m 27s