Build failed. https://zuul.opendev.org/t/openstack/buildset/f5d4e45e5bae49bf88a6993370145dc8 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9a8738c1e8334a4e84c9adc166316232 : SUCCESS in 4m 15s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d423b28399224fa987f01ba2e2562d9f : SUCCESS in 3m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e512fddfea6842e9955a7bd0d572c7fa : SUCCESS in 4m 17s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4d3011967a8b47b8a2c6fa7ab11a4615 : FAILURE in 3m 44s