Build failed. https://zuul.opendev.org/t/openstack/buildset/0b3e2a6b59774630b0c1cb5f76c60996 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e17258ad5ba444e5ab9c4249f9dfa9fb : SUCCESS in 3m 25s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/357f5541677847f091843c3aaa5cae75 : SUCCESS in 3m 36s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/70ec2faa435b48a58a2d787c83e11534 : FAILURE in 3m 22s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/77f4ec8fa0a3436d88544e7b332515c1 : FAILURE in 3m 13s