Build failed. https://zuul.opendev.org/t/openstack/buildset/13365adf3e5a4134a6c80abdc4b3ca0b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e7c782f2b9d046d3a14500176e73289a : FAILURE in 7m 01s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/29cc5a5b511e4844b553c3f3d6a0a528 : SUCCESS in 6m 16s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0282095c316147ba8a3c985385d8d1e0 : SUCCESS in 5m 28s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/76cb2f933d084c5d83645d0016fdc0b6 : SUCCESS in 6m 16s