Build failed. https://zuul.opendev.org/t/openstack/buildset/0176e81df2994e3c87b90436b4319aa6 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0b1803e4f1c64556a12e8baaf681fa8e : SUCCESS in 3m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3642255951644916a659a1e2ece75b74 : SUCCESS in 2m 40s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ed224d84486a48388e6c03692a3130d4 : SUCCESS in 2m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ca5e31a38e2a4acf982521d6d82d0bf7 : FAILURE in 2m 38s