Build failed. https://zuul.opendev.org/t/openstack/buildset/3e22913a4e67453abcc802fa22d43fe8 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5f9f1f33246c441eb04d07fa072f04a8 : SUCCESS in 4m 22s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0480482f5d7843249dd901ec6e958758 : SUCCESS in 3m 29s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e2a849bbd0e24f6991ea589a513bc4f9 : FAILURE in 3m 11s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/04ffbce8c04644c8913057616c6c00e9 : FAILURE in 2m 31s