Build failed. https://zuul.opendev.org/t/openstack/buildset/bbc3c94ec6434829aec3b9fc04a5bebb - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8f7ae599a3a44b218bf594e5ae4221f9 : SUCCESS in 4m 10s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b40dcc245ada4ddaa05f22e2ae6f4e15 : SUCCESS in 5m 54s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6072a69eccfa47da9b45e3b2d54b4004 : SUCCESS in 5m 10s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/73028acb24b44bf8afed0ec56b250525 : FAILURE in 4m 32s