Since upstream claimed this issue could not be reproduced, I decided to run a test on zelenka.debian.org
The build did fail with a testsuite failure, but it looked nothing like the one in the buildd log. Rather than most tests passing and a few failing most tests failed, I looked at a few of the failing tests and all the ones I looked at failed with "permission denied" errors. I attatch a build log, any idea what might be going on?
