Build failed. https://zuul.opendev.org/t/openstack/buildset/6ec77f0472a64c02b19801e36bf82e31 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f5df9b0e9ac4462681cd0a78ddd0e905 : SUCCESS in 4m 16s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/bcb611b9cf3443b48909e75acd4e78b0 : SUCCESS in 3m 49s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ec1a4d4eb6df470bb81b0e287d735b77 : SUCCESS in 2m 40s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/773fed4ee63a49c09a63547129d8c54f : FAILURE in 2m 44s