Build failed. https://zuul.opendev.org/t/openstack/buildset/cd3f631137224b6da7586e527666fee5 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/db6760b1205148fea12565fefdc63f8f : SUCCESS in 2m 51s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/36d3bb27e9ae498b8a790f5e9c037d71 : SUCCESS in 2m 55s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8571a6007c444f4cab191e6dd6b8f7f8 : SUCCESS in 2m 43s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/18165d57577e46739f16a478768f8159 : FAILURE in 3m 07s