Build failed. https://zuul.opendev.org/t/openstack/buildset/db3930ac2c874d7eb931321fd686b3cc - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/cb290ebd2eab473c97d2976d68695353 : SUCCESS in 5m 41s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3ae9fc4b0ac249269d340390bcbabaf6 : SUCCESS in 5m 49s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/10c8e54fbd1c4b0799b2ba1624917a14 : SUCCESS in 4m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c05b3e7b3cf946938438515c651b1c1f : FAILURE in 4m 57s