Build failed. https://zuul.opendev.org/t/openstack/buildset/15bf0bcd35c448259958a2b11aeb6d9f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/280d62b1644b4d94a0a3e0950bbeea03 : SUCCESS in 4m 41s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a7af8d887369488f95c4fba4741d0f23 : FAILURE in 4m 12s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0034bd440f864992b1209a05d27d6892 : SUCCESS in 3m 46s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/de5edae3b1d24c7bbd153ffbba61a562 : SUCCESS in 4m 47s