Build failed. https://zuul.opendev.org/t/openstack/buildset/99fe2ee60f134132a8c98cdc7a18e280 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0396a8f6b1ea47459aaf6a41aebf37a1 : SUCCESS in 3m 36s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9744cb55901c43058ab6d665a135b05d : FAILURE in 2m 54s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3b734d1525a846d5943e96a6a760fe14 : SUCCESS in 3m 30s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/253c0ed98ff449268e662a6811598fa4 : SUCCESS in 3m 51s