Build failed. https://zuul.opendev.org/t/openstack/buildset/3c7b9bf32c634ef492270759b41a145d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e390ed1813b84f5d8307ce0860b142f9 : SUCCESS in 4m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a52eba91ee4848feb4d9113fc5e64c61 : SUCCESS in 3m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f5b3cc57eb05414380189ebbe80e54db : SUCCESS in 2m 36s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0f85562e19e54a37bd585ab969030722 : FAILURE in 2m 53s