Build failed. https://zuul.opendev.org/t/openstack/buildset/29e936289e514bd6a783342bcdc76715 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8f421a8d7d87456980553fecdd6058f4 : SUCCESS in 3m 11s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a0d77cdfbc8544c8b54426715bf7e834 : SUCCESS in 5m 03s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e0df5f05c23d47098b895166baf96622 : SUCCESS in 4m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7d144c9183ea4361ae4a89e1efd98d03 : FAILURE in 3m 42s