Build failed. https://zuul.opendev.org/t/openstack/buildset/ea6a4c17fb7d49c0919835ca790c099e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/02cb9b8dae0d4fc48a0c64979acabb54 : SUCCESS in 3m 06s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/af9ec33672d04cbe87b3335aa5984cc2 : SUCCESS in 2m 56s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/628005de9fce4a43a4cd447330e722cb : FAILURE in 4m 26s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8608ed7659454c8e8e8e115efb1de78b : FAILURE in 3m 24s