what to do if --check-destination-dir ends in traceback?

Dear rdiff-backup users and developers,

lately I had to do a fsck.ext4 -y on the filesystem which
hosts my rdiff-backup.  Then I had tracebacks when I
attempted the next backup.  What to do in such a case?

Is there any hope to revive this rdiff-backup?

This is rdiff-backup 1.2.8 on Debian 10.10 (buster):



$ sudo rdiff-backup --check-destination-dir /mnt/usb-backup/rdiff-backup/durable/
Unknown field in line '9e r1ons000'
Unknown field in line '9e 10a595828229'
Exception 'RORPath instance has no attribute 'path'' raised of class '<type 'exceptions.AttributeError'>':
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/Main.py", line 304, in error_check_Main
    try: Main(arglist)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/Main.py", line 324, in Main
    take_action(rps)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/Main.py", line 282, in take_action
    elif action == "check-destination-dir": CheckDest(rps[0])
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/Main.py", line 872, in CheckDest
    dest_rp.conn.regress.Regress(dest_rp)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/regress.py", line 71, in Regress
    for rf in iterate_meta_rfs(mirror_rp, inc_rpath): ITR(rf.index, rf)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rorpiter.py", line 281, in __call__
    last_branch.fast_process(*args)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/regress.py", line 274, in fast_process
    else: rpath.copy_with_attribs(rf.metadata_rorp, rf.mirror_rp)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 243, in copy_with_attribs
    copy(rpin, rpout, compress)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 121, in copy
    else: raise RPathException("File %s has unknown type" % rpin.path)

Traceback (most recent call last):
  File "/usr/bin/rdiff-backup", line 30, in <module>
    rdiff_backup.Main.error_check_Main(sys.argv[1:])
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/Main.py", line 304, in error_check_Main
    try: Main(arglist)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/Main.py", line 324, in Main
    take_action(rps)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/Main.py", line 282, in take_action
    elif action == "check-destination-dir": CheckDest(rps[0])
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/Main.py", line 872, in CheckDest
    dest_rp.conn.regress.Regress(dest_rp)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/regress.py", line 71, in Regress
    for rf in iterate_meta_rfs(mirror_rp, inc_rpath): ITR(rf.index, rf)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rorpiter.py", line 281, in __call__
    last_branch.fast_process(*args)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/regress.py", line 274, in fast_process
    else: rpath.copy_with_attribs(rf.metadata_rorp, rf.mirror_rp)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 243, in copy_with_attribs
    copy(rpin, rpout, compress)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 121, in copy
    else: raise RPathException("File %s has unknown type" % rpin.path)
AttributeError: RORPath instance has no attribute 'path'


Thanks for your attention, Gregor