Build failed. https://zuul.opendev.org/t/openstack/buildset/593b82d228bc4f4caaf8c4b5a21bdb89 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f4e602d100a44c02b9d016df06b351da : SUCCESS in 6m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7f9df8a94fa14f2c9423202b105e1f54 : SUCCESS in 6m 17s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2ec61111db0b463ab2aeacb575efa589 : FAILURE in 6m 28s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/cde86899be744a199305ce5147f2560c : FAILURE in 4m 07s