Build failed. https://zuul.opendev.org/t/openstack/buildset/d3a4f2b27a1e499e81977bed49ee9bce - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3f6d57f871d34a06ad90733fb2a395c9 : FAILURE in 7m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ac6cae24f8cf4a64a269a8cefd1e061d : SUCCESS in 9m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5ec52773688f42d2ae4a9037c88e7293 : SUCCESS in 6m 15s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c883ba4c9f4e406882f2797d217f5627 : SUCCESS in 6m 54s