Build failed. https://zuul.opendev.org/t/openstack/buildset/1e1ee4ccf07f4402860141f61eedbba7 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2b9d969718834abdabff953e62094e12 : FAILURE in 4m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c8cb3bcb00964d939a05e42b19030de3 : FAILURE in 4m 18s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fbf0e514ace3430682951cdff95c6191 : FAILURE in 6m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4373fae8fe59434b8892592a3f3766f2 : FAILURE in 4m 45s