Can you reproduce the failure with Devel::NYTProf 2.07_94? If so, could you give me remote access via ssh? (Or spare some time to investigate yourself – I’ll happily clue you in if you can reproduce the problem.)

Update: No one could reproduce it. It seems that the failures was not what it appeared to be. A clue was that only one tester was affected. Devel-NYTProf-2.07_94.tar.gz unpacked itself into a directory called Devel-NYTProf-2.07. It seems that when using CPANPLUS if the user had already got an old Devel-NYTProf-2.07 directory its contents got merged and tests would fail. I’m not convinced that’s the whole story, but Devel-NYTProf-2.07_95.tar.gz unpacked into a Devel-NYTProf-2.07_95 directory and didn’t run into the problem.

Update: More usefully, Andreas made my wish come true by pointing out the –solve parameter to the ctgetreports utility in his CPAN::Testers::ParseReports distribution. It “tries to identify the best contenders for a blame using Statistics::Regression. […] The function prints the […] top 3 candidates according to R^2 with their regression analysis.” Cool.

All failures seem to come from multi-threaded builds, it has to be related to that. Strangely, it not all multi-threaded builds fail. There has to be an other factor but I haven’t figure out yet what it is.