Build failed. https://zuul.opendev.org/t/openstack/buildset/9bbde6442d4b4be4b6c0580cb52b7b69 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3d4f1e5c49f54a35a32b525de1b26e57 : SUCCESS in 3m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d178da7a785c48388949d064aa95f3d9 : SUCCESS in 3m 02s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8740d4ecfaf54bf7baf9d573467b885d : SUCCESS in 4m 07s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/452cad81e0384951be85eac5d42e6240 : FAILURE in 3m 49s