Hi, Since some time we are trying to move our neutron-functional job to be run with python 3 - see patch [1]. Unfortunately we are still hitting same issue, some subunit parser error with message like "Parser Error: {{{Short read - got 4090 bytes, wanted 4376 bytes}}}”. See for example here: [2]. That cause that only around half of tests are executed and our job is failed. We found similar bug in Cinder [3] and we were trying to limit number of output produced by tests but this doesn’t help much. I don’t know how to move forward with this issue. Maybe someone more familiar with ostestr/subunit can take a look at it and help us to make this job finally working :) [1] https://review.openstack.org/#/c/577383/ [2] http://logs.openstack.org/83/577383/28/check/neutron-functional/649ba74/logs... [3] https://bugs.launchpad.net/cinder/+bug/1728640 — Slawek Kaplonski Senior software engineer Red Hat