git-fsck errors in the git-bare cooker are not properly reported

12:10 <+zack> vlorentz: i've tried cooking with git bare the rev swh:1:rev:188af599816d671bd15cd8e8e594290ae8ea11cc , it remained in "processing" for a while (30+ min) and then ended up with "Internal Server Error. This incident will be reported.
12:10 <+zack> "
12:10 <+zack> (reporting the bug as you requested :-), let me know if you want me to post this elsewhere)
12:14 <+olasd> looks like a couple of the revisions in the history of that one have the "gpg signature trailing newline got stripped" bug
12:16 <+olasd>                                            error: sha1 mismatch for ./objects/2f/df9ad3c80a23b562644ac2ba5e1af24f38a43a (expected 2fdf9ad3c80a23b562644ac2ba5e1af24f38a43a)
12:16 <+olasd>                                            error: sha1 mismatch for ./objects/6b/8833ef339435aa73e20e1c0d8aba9be0224593 (expected 6b8833ef339435aa73e20e1c0d8aba9be0224593)
12:33 <+zack> oh, i also got a report via email, which is much less telling than what you found (thanks):
12:33 <+zack> This bundle could not be cooked for the following reason:
12:33 <+zack> Internal Server Error. This incident will be reported.

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Migrated from T3566 (view on Phabricator)