XZise added a comment.
Okay if we are going to change something for this I think the most sensible way would be to have a flag in fetch() to ignore failures. And whenever a batch is executed and it's not important that all modules are cached and it “could“ skip some that it skips problematic.
TASK DETAIL https://phabricator.wikimedia.org/T100779
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To: XZise Cc: XZise, Aklapper, jayvdb, pywikipedia-bugs