Build failed. https://zuul.opendev.org/t/openstack/buildset/9b05f8a30fb44738b89a6f5e7338750a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6e5d35a4e09f487da28ac92897814328 : SUCCESS in 4m 38s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8f0543f9cf44439bbd39134dbe25183b : SUCCESS in 6m 20s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/db2acd2e7ffb4bfcb53bf2a95bf8b856 : SUCCESS in 6m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/70c4b9ee752c4e94b471c5cc65a4f51b : FAILURE in 4m 43s