Build failed. https://zuul.opendev.org/t/openstack/buildset/8426c823e4bb45fd9aa190a1775d629b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d00efa56f0fa4085825dff0286a64e86 : SUCCESS in 4m 01s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/de4cb159c1f745a0abffc64dab673573 : SUCCESS in 3m 53s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0e85168cf5d441739229f0753a1c3f0b : FAILURE in 3m 23s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/bb4cb20faf7c450d8250fed0886d49e8 : FAILURE in 4m 41s