Build failed. https://zuul.opendev.org/t/openstack/buildset/57e66b5c3e3f4f6db1a2bfa1587d6ab8 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/eb7edc5df1ad423e88dc663a814793e8 : FAILURE in 4m 11s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f92f79c71afa48c5b87e9786a0e1b598 : FAILURE in 4m 13s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/eed7c84ad58f4fb1a55ea43d76393bc0 : FAILURE in 4m 32s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/eb475848a7ab4422a99968d00e8f7665 : FAILURE in 4m 39s