Build failed. https://zuul.opendev.org/t/openstack/buildset/acf5558889614aa19e8c5081b4c42b7f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/dcb0b05360cb49e39a87fe7a5f33b417 : SUCCESS in 4m 44s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c49eda40c7e24ee0bd92043100c894a1 : SUCCESS in 5m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/908c81cde78a473582a6f0a213bc21ee : SUCCESS in 5m 16s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1db10e44985340058bf089828f76bdeb : FAILURE in 4m 11s