Build failed. https://zuul.opendev.org/t/openstack/buildset/7a565d2ae8e441c5aa532edf304c81ce - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/414a54274f284ca6a9e4dce2a1402c53 : SUCCESS in 4m 56s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b9bb06ada11b4dbab2c0c12e423423b5 : SUCCESS in 4m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/08a1702d54574b8485c8e5a70ae8a3a5 : SUCCESS in 4m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/17df19a16fad47fc8f9b104c12886463 : FAILURE in 5m 19s