Build failed. https://zuul.opendev.org/t/openstack/buildset/f99dcdd5feea4c82b0daaa14a76be2bd - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/867d721a156d4ca9bf6436c87e771eee : SUCCESS in 3m 20s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/74ef2da2b6b94e279b4a2ce7d24ce92c : SUCCESS in 3m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6352fa71cf494a2db93f57b45951a1a4 : FAILURE in 3m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7e43fe28389e4c2189abc6a9e2a28460 : FAILURE in 2m 59s