Build failed. https://zuul.opendev.org/t/openstack/buildset/9b77355d13e94dca879b3080cb5b2af4 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a3ca11c1e76f441d83ec06cf4ad5818d : SUCCESS in 3m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d4e2665d35ee426988744f8aad2f1007 : SUCCESS in 4m 11s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/be6888e1e89c4bbab52ac79556ca3ea3 : FAILURE in 3m 41s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/fcd47fc176be4f2986888a32d9e9a31d : FAILURE in 4m 38s