Build failed. https://zuul.opendev.org/t/openstack/buildset/f6cf98c18d5947bf91fde0eb734c8fbf - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/bdc93cba0773427da9821f5beeca8f19 : FAILURE in 5m 21s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3de72ace9a0e44e19398f69f7688ec9f : SUCCESS in 7m 08s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e94bb2ab977c48b98398461a20ad03c5 : SUCCESS in 6m 38s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/051085a53b194ab9b4600d9028acc608 : SUCCESS in 7m 04s