Build failed. https://zuul.opendev.org/t/openstack/buildset/06b3eef1de974ccc8f39a50c2a61131e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/01ac1fef0d6b43219ef5859589aca6af : SUCCESS in 3m 28s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1f43d28be3224b809d088bb99c9941f8 : SUCCESS in 3m 37s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2cbfc469f4d04395809f63170b62b3b9 : FAILURE in 4m 14s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7ac1d11bd73845ec86585c8b51bde89d : FAILURE in 3m 20s