Build failed. https://zuul.opendev.org/t/openstack/buildset/2074b29c12334e1c8f5c9683f60afc96 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/350a2852d4d743de913055dbeaa97437 : SUCCESS in 3m 04s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d86191c3dea646dfb0c95fc1da3044c2 : SUCCESS in 3m 27s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d9d12b8c0e14461a8b536c074c98a7ca : FAILURE in 3m 31s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/27d5b7d20ed7481e8796713ea4ec9200 : FAILURE in 2m 54s