Build failed. https://zuul.opendev.org/t/openstack/buildset/d6048003317545a58c5f4f0e27803016 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9af308dabb6c4ec4a4d2bb4bded47500 : SUCCESS in 3m 00s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f2573864f141420094825188c6af87d2 : SUCCESS in 2m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/16fe4f4aec744e569de2be86d75921f6 : SUCCESS in 2m 55s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9616324849ba4912b20eca0808c929aa : FAILURE in 3m 10s