Build failed. https://zuul.opendev.org/t/openstack/buildset/2bb812ee86274aee8d95b6b7a4f74553 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7df1d37aff9747c5bdb2f20a6cbf8635 : SUCCESS in 3m 59s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5ad31b6b6beb41b185a977af1694418d : SUCCESS in 4m 38s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5d03f42957ed4d2fb73d2b8398415c5d : FAILURE in 8m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f27b8283500544428c8878448b3c4356 : FAILURE in 4m 10s