About memtest86 package I suppose it is no longer supported because version 5 and newer are proprietary and there is no new work upstream on version 4 for 8 years if I'm not mistaken, memtest86+ (its fork) have low support upstream but seems still alive and I invested some time for its debian package.
Open a unique bug (this) for both I think is wrong as they are "different".I don't mark as fixed (about memtest86+) for now as the issues that cause freeze on version in stable/testing/unstable should be multiple, newer upstream version and additional patches fixes different issues with newer gcc and newer hardware but I'm not sure that solves all cases.
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