Comment 3 for bug 812869

This almost works, but not quite. Looking directly at the dogfood database I can see that the error message is written to the PCJ's json_data. Unfortunately, the job's status is COMPLETED rather than FAILED, so it does not get shown in Archive:+packages.

Since this is no worse than the previous situation, and since copying to a PPA is hidden behind a feature flag anyway, this is still qa-ok, but it's not a complete fix.