[dralley]

If one of the Debian or Fedora developers had immediately caught on to what they were looking at when their attention was drawn to it by the failures, I would say the system worked. It's certainly true that open source saved the day here, but that's maybe different from saying "the system" worked. It easily could have gone unnoticed, or been noticed a few weeks later.

[dismalaf]

It could have also been noticed earlier. Maybe it was luck it was detected so late?