Build failed. https://zuul.opendev.org/t/openstack/buildset/a83cb6fc06b64f57b9f2a24d2b0f0261 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9c128681940f43da96c67d54b2c4bd83 : SUCCESS in 5m 40s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c3933d9964fe4bb2ae711ed826a0eea8 : SUCCESS in 5m 18s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/9f586f4e697f4516a23f53e2c74d09bd : SUCCESS in 5m 34s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1766f968715044c8b2845d60394f089a : FAILURE in 5m 27s