TW
@jmcdonal it would be a good idea to have 2 separate tickets, one about the mailing list and one about your question - both with correct issue title.
Note: I will ignore this issue until at least the issue title is fixed (and preferably also the mailing list stuff is separated into a separate ticket).
my usual trick to get rid of dev,sys,proc,... crap is to assemble everything useful under /rootfs using --bind mounts. and then backup /rootfs. you'll even get the REAL on-disk files...
BTW, as we recently found out in a discussion, this is a special case (mountpoint directory) of the more general case (anything on the "parent" disk overlayed by the mounted...
It looks like there is some problem with the "hints.xxx" file (see in your repo directory). Maybe it is somehow corrupted (empty or bad contents), you could try removing it....
Maybe it is s3fs not running reliably / well enough as a filesystem? Can you reproduce on a local ext4 mount?
librelist seems to have problems now and then (I recently moved another mailing list away from there due to that). So, try again later, contact support there, or just create...
The tests should be run with `fakeroot -u`. Not sure if that has to do with your issue though. It is no problem to have both python 2.x and 3.x...
I assume you have libattr and -dev?
Tests: it seems like they can not set extended attributes (xattrs) on the files in /tmp. Maybe this is because your /tmp filesystem does not support xattrs or is mounted...