Build failed. https://zuul.opendev.org/t/openstack/buildset/dce96a894c3c4f1aa773e3ac9fe28d09 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f5504c825a694be287efb48c6c558295 : SUCCESS in 4m 32s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/237c6f5b6c3c454cb4c3347b325c1cf7 : SUCCESS in 2m 55s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/04f05b9ce5b641d58221d81c6e60e379 : SUCCESS in 3m 36s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/da3d4f647a47447bb488b1a205f10885 : FAILURE in 3m 15s