Build failed. https://zuul.opendev.org/t/openstack/buildset/48d2e2c399f740ad9d1c86e71ed4dc29 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b3e3a44e85604e2a8aeb5cf8382f383f : SUCCESS in 5m 53s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ca8e29b5d8f0414bb360c72f4a9539b8 : FAILURE in 4m 25s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5450737e366b4b3bb25d9e94b6d0ce21 : SUCCESS in 6m 04s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/140260cfb0fd4d8090ff5e719386d1df : SUCCESS in 6m 42s