Build failed. https://zuul.opendev.org/t/openstack/buildset/cddcceaffcf74a8fa0ee0695f5425dab - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/bf41b4cbbec24b9a9416256c1b6dc92a : SUCCESS in 7m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/09455e051c9e4d2ca2c9149d321a3eeb : SUCCESS in 7m 43s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/fd302c8217984da28593eecc9db094ed : FAILURE in 4m 40s