Build failed. https://zuul.opendev.org/t/openstack/buildset/2ff5240c5bdb46bab930f9c3463d094e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4548eb34b9204982849ba5c00b52fd9a : FAILURE in 6m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7673f96c7cd04633b1d782612baa0840 : SUCCESS in 5m 36s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/bd0ff6d4482d40579563651a80d001d4 : SUCCESS in 6m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/cece74062b6f47ecbc7387ce24d573bc : SUCCESS in 9m 12s