Build failed. https://zuul.opendev.org/t/openstack/buildset/6631171cd99e46d1977f1fbc7fccafac - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/80c2a33248f141b2a879964cc68aefee : SUCCESS in 4m 36s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4a5cc2246eef42b89197f797d3707ba0 : SUCCESS in 3m 49s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/cee9b90dcf5b4c63b279472d8acfd342 : SUCCESS in 2m 16s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/18eb6961c3fc45acbe699f932f5a6312 : FAILURE in 3m 23s