Build failed. https://zuul.opendev.org/t/openstack/buildset/a7ca21a2a1d3460c802ce70a078a4e71 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/acd06c4d46c94c4abd03d2b3b92df1a4 : SUCCESS in 3m 05s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e40d397e27f9484f8ebbe95a04e940bd : SUCCESS in 3m 27s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/815ea99ee5be42f9abf688563487ab54 : SUCCESS in 2m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/05de2ec80b8642689b6a0e399d2c6b3c : FAILURE in 2m 53s