Build failed. https://zuul.opendev.org/t/openstack/buildset/47619ab8e0fb4101ad93ef3161528d93 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/fc0532acc7304d909eaa809ea428c608 : FAILURE in 3m 16s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ceaa0b03986c4b96978a9fb7eb2ce5fc : SUCCESS in 3m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/012775368de4460096fe719f2a6724bf : SUCCESS in 2m 52s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/770489da0bf441b589448a11c0542b9a : SUCCESS in 4m 24s