After reinstalling a clean Ubuntu, creating a new user account, finding that rdiff-backup works, reproducing the error on my account with dash, and then perusing `env`, I think I finally found the problem.
My Bash config set the variable $PYTHONOPTIMIZE. If this variable is set to any value, rdiff-backup crashes. (It seems to be the only Python application I use which ever does that, which is why I couldn't figure it out for so long.) Calling `unset PYTHONOPTIMIZE` fixes it. My bisecting of my Bash config hadn't exposed it because apparently all my test shells would inherit that variable from the login shell. Phew! Now, I suppose the question is why rdiff-backup fails so gracelessly. (Even if it ought to crash when that shell variable is defined, the message ought to be a *little* more informative than that!) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/658413 Title: rdiff-backup crashes with compression error (inc_compressed) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs