Build failed. https://zuul.opendev.org/t/openstack/buildset/23311c4138754eac995a3d41504b3b8d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/cf18c98600a145b9862c0f2d331e7fa8 : SUCCESS in 2m 42s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5a41f5694ad34d9195c958e6ee061b3b : SUCCESS in 3m 33s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a0b8f15749034aefb8d2e4e8de7b31be : FAILURE in 2m 59s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9eba938e886743f187f727bd0f775ae1 : FAILURE in 2m 33s