Build failed. https://zuul.opendev.org/t/openstack/buildset/c78ade713ffc4989a14f72568afba24d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/eb8b44bdfad74d09bf4c7e66a3f06ae8 : SUCCESS in 13m 11s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8284c76f7a9d4672b5c087848fe02f90 : SUCCESS in 10m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6317a3cef7384297bf7c00e9e9bc0df3 : SUCCESS in 9m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/128d23c853754bfda7ff0513529bf233 : FAILURE in 10m 14s