Comment 11 for bug 1130146

You can replicate this with getting "1b9b66ba210c1dd886a95d79e5621e13fb64aa3a"

and running

./run_tests.sh nova.tests.test_libvirt_config

That should return a total of 48 tests. But instead you'll see some of these traces, and 44 or 43 tests passed (0 fails).