Another timeshift bug -- Using cli, snapshot gives "E: Failed to remove directory, Ret=256"

[zZzUP3RzZz]

In addition to my bug report here, I have found a different error on a different machine:

snapshot appears to work properly, but then gives :

E: Failed to remove directory
Ret=256

The system in question this time is arch.

[zpz]

I found the same problem in Timeshift logs.

After clicking "create", it does "estimate system size" or something, then flashes a new page of content (there seems to be two columns with names on the left and value/info on the right), then disappears.

This is blocking my upgrade from 21.3 to 22.

[chidniu]

I have the same problem on Fedora 40 (rsync mode, not btrfs). It started after I cancelled a Timeshift backup going up to nearly 200% and me assuming something went wrong. I then deleted the folder of the incomplete backup and started a new one, which then appears to worked (restore not tested) but also with the E: Failed to remove directory Ret=256 error. I am now also getting the error when using the list command.

[rardcode]

I've same problem in Manjaro
Timeshift v.24.06.5

Output of timeshift --debug --list command

D: Main()
D: 
D: Running Timeshift v24.06.5
D: 
D: Session log file: /var/log/timeshift/2025-01-14_11-17-14_list-snapshots.log
D: Distribution: ManjaroLinux 24.2.1 (Yonada)
D: DIST_ID: ManjaroLinux
D: Main: check_dependencies()
D: Main: add_default_exclude_entries()
D: Main: add_default_exclude_entries(): exit
D: update_partitions()
D: df -T -B1
D: Device: get_disk_space_using_df(): 3
D: Device: get_mounted_filesystems_using_mtab(): 3
D: Device: get_filesystems(): 7
D: partition list updated
D: detect_system_devices()
D: /boot/efi is mapped to device: /dev/nvme0n1p1, UUID=F131-A998
D: / is mapped to device: /dev/nvme0n1p2, UUID=f61c7563-45b7-4a68-b78d-32352daed5ea
D: Searching subvolume for system at path: /
D: Users: root rardcode
D: Encrypted home users: 
D: Encrypted home dirs:

D: Encrypted private dirs:

D: Main: load_app_config()
D: Member not found in JSON object: snapshot_size
D: Member not found in JSON object: snapshot_count
App config loaded: /etc/timeshift/timeshift.json
D: IconManager: init()
D: found images directory: /usr/share/timeshift/images
D: Main(): ok
D: AppConsole: parse_arguments()
Mounted '/dev/sdc1' at '/run/timeshift/331477/backup'
Device : /dev/sdc1
UUID   : e7e74791-a820-4230-9ee0-72140bc097c1
Path   : /run/timeshift/331477/backup
Mode   : RSYNC
Status : OK
4 snapshots, 777.6 GB free

Num     Name                 Tags   Description  
------------------------------------------------------------------------------
0    >  2025-01-09_21-40-01  O                   
1    >  2025-01-12_13-00-01  D W M               
2    >  2025-01-13_13-00-00  D                   
3    >  2025-01-14_11-13-26  D                   

E: Failed to remove directory
Ret=256
E: Failed to remove directory
Ret=256