Build failed. https://zuul.opendev.org/t/openstack/buildset/a996e76076224c80b8b88c98cd081c6d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e889e3ee735848b1a12c064197d6b09d : FAILURE in 3m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1f0a42ef55c14f6ba2cef8116c4d7797 : SUCCESS in 5m 13s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/200e6b6d4ac941a596ea2ec0a57bd939 : SUCCESS in 4m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f0379d20cbd34adbb492120042030928 : SUCCESS in 4m 46s