Build failed. https://zuul.opendev.org/t/openstack/buildset/b711327d34e74bd5b59ea487988b504b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/84378dcf51ed4ace9cec6a92d87f8716 : FAILURE in 6m 41s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b51bfdc237a24f7ab13e7b052638a554 : SUCCESS in 5m 57s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/73f8b8e887a94cacadc20b7780498873 : SUCCESS in 6m 12s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/cbd826a3f0a04932b0c49cbcb60aa127 : SUCCESS in 6m 20s