Build failed. https://zuul.opendev.org/t/openstack/buildset/374670350e804ac4ab2c48c5092dbab2 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e1ad396fa09b48cba5494b5de90a6e83 : SUCCESS in 4m 00s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/62faaf28065948c5b5a7ccb0a1d0efc8 : FAILURE in 4m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/31556510e928400f97a1ae9b3167b9be : SUCCESS in 3m 58s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/bfb16d32f48245a9a7bb6fefd65d2d66 : SUCCESS in 3m 42s