Build failed. https://zuul.opendev.org/t/openstack/buildset/2be4c4ccedf74155b98587e6e714e8ed - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6ab757e2dea848d182a5f8f23cf11f3d : SUCCESS in 3m 46s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2f65df10f81447d2bf4bc9d077b8d97c : SUCCESS in 4m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/9fd0aa7654c6477da19954f7ce4218d8 : FAILURE in 4m 13s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7d9ce88f1eb6422daeebc20428a9f1df : FAILURE in 3m 23s