Build failed. https://zuul.opendev.org/t/openstack/buildset/a39cbeec2d2f4826aeea9115704501bb - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7b9956e086754639804d48503d69ab5e : FAILURE in 3m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4fd4bce2d2a94a228797fb889879add9 : SUCCESS in 4m 06s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7b8cc5dd91004178949005601f0f47c1 : SUCCESS in 4m 09s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c9945569b7f245e5ab9ac4b7f41d6d30 : SUCCESS in 3m 29s