Build failed. https://zuul.opendev.org/t/openstack/buildset/fffcd00693a641c3b44ba0d8ba1e40af - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/29e78274c8a84dbdb9a39147c877615d : FAILURE in 5m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/72b0a894595d44a7ae8ad85d68d7457d : SUCCESS in 6m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/391c20b8fcef47519f07233b5e37da9a : SUCCESS in 6m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/318c17e7508847debbdf6ccbbb180ebf : SUCCESS in 8m 47s