Build failed. https://zuul.opendev.org/t/openstack/buildset/0ee2128cb9cc4e1ab4336126b616b32d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/59d564ca65544583a4307661d0b6c010 : FAILURE in 5m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8595d36291724d8481d4eb4f447237af : SUCCESS in 4m 36s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fc9040cc3c194a58b8eaae11b1e5f24a : SUCCESS in 5m 16s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a2c42ec694124c7fb685783beaf7e313 : SUCCESS in 6m 31s