"borg2 create" crashes

[Jacco van Schaik]

The following borg2 command (that worked without problem on Ubuntu 24.04):

# borg2 create --one-file-system --compression auto,zstd 'Home-{now}' /home/jacco

crashes (on Ubuntu 24.10) with the following message:

============================

Local Exception

Error:

TypeError: ChunkListEntry.__new__() takes 3 positional arguments but 33 were given

If reporting bugs, please include the following:

Traceback (most recent call last):
  File "/usr/lib/borgbackup2/borg/archiver/__init__.py", line 656, in main
    exit_code = archiver.run(args)
                ^^^^^^^^^^^^^^^^^^
  File "/usr/lib/borgbackup2/borg/archiver/__init__.py", line 549, in run
    rc = func(args)
         ^^^^^^^^^^
  File "/usr/lib/borgbackup2/borg/archiver/_common.py", line 158, in wrapper
    return method(self, args, repository=repository, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/borgbackup2/borg/archiver/create_cmd.py", line 280, in do_create
    create_inner(archive, cache, fso)
  File "/usr/lib/borgbackup2/borg/archiver/create_cmd.py", line 169, in create_inner
    self._rec_walk(
  File "/usr/lib/borgbackup2/borg/archiver/create_cmd.py", line 539, in _rec_walk
    self._rec_walk(
  File "/usr/lib/borgbackup2/borg/archiver/create_cmd.py", line 539, in _rec_walk
    self._rec_walk(
  File "/usr/lib/borgbackup2/borg/archiver/create_cmd.py", line 539, in _rec_walk
    self._rec_walk(
  File "/usr/lib/borgbackup2/borg/archiver/create_cmd.py", line 479, in _rec_walk
    status = self._process_any(
             ^^^^^^^^^^^^^^^^^^
  File "/usr/lib/borgbackup2/borg/archiver/create_cmd.py", line 296, in _process_any
    return fso.process_file(
           ^^^^^^^^^^^^^^^^^
  File "/usr/lib/borgbackup2/borg/archive.py", line 1558, in process_file
    known, chunks = cache.file_known_and_unchanged(hashed_path, path_hash, st)
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/borgbackup2/borg/cache.py", line 609, in file_known_and_unchanged
    chunks = [ChunkListEntry(*chunk) for chunk in entry.chunks] # convert to list of namedtuple
              ^^^^^^^^^^^^^^^^^^^^^^
TypeError: ChunkListEntry.__new__() takes 3 positional arguments but 33 were given

Platform: Linux occam 6.11.0-13-generic #14-Ubuntu SMP PREEMPT_DYNAMIC Sat Nov 30 23:51:51 UTC 2024 x86_64
Linux: Unknown Linux
Borg: 2.0.0b9 Python: CPython 3.12.7 msgpack: 1.0.3 fuse: llfuse 1.4.1 [pyfuse3,llfuse]
PID: 37878 CWD: /var/log
sys.argv: ['/usr/bin/borg2', 'create', '--one-file-system', '--compression', 'auto,zstd', 'Home-{now}', '/home/jacco']
SSH_ORIGINAL_COMMAND: None

ProblemType: Bug
DistroRelease: Ubuntu 24.10
Package: borgbackup2 2.0.0b9-2
ProcVersionSignature: Ubuntu 6.11.0-13.14-generic 6.11.0
Uname: Linux 6.11.0-13-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.30.0-0ubuntu4
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: XFCE
Date: Sun Dec 22 21:30:59 2024
InstallationDate: Installed on 2017-02-04 (2878 days ago)
InstallationMedia: Xubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
SourcePackage: borgbackup2
UpgradeStatus: Upgraded to oracular on 2024-12-22 (0 days ago)