Thanks for your bug report. I can't reproduce the bug you've described
in the latest rdiff-backup in gutsy gibbon so I'll close this bug
report. If you find it still isn't fixed, please feel free to reopen
this bug. Thanks.
** Changed in: rdiff-backup (Ubuntu)
Status: New = Fix Released
I found the source of this problem. It was not that the destination was
a USB drive but that it was among the included source dirs. After
excluding /dev/bus/usb the Job went through.
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rdiff-back crashes when destination is my USB drive with IOError: [errno71]