structuredAttrs is enabled
WARNING: Skipping subvolume "/nix": Failed to fetch subvolume detail
WARNING: ... Command execution failed (exitcode=127)
WARNING: ... sh: sudo -n readlink -v -e '/nix'
WARNING: ... sh: sudo: not found
--------------------------------------------------------------------------------
Backup Summary (btrbk command line client, version 0.32.7)

    Date:   Tue Sep 22 17:38:45 2026
    Config: /nix/store/la0hvpmg0lqd9gzzdc5l86gxmjj7hilh-btrbk-nix.conf
    Dryrun: YES

Legend:
    ===  up-to-date subvolume (source snapshot)
    +++  created subvolume (source snapshot)
    ---  deleted subvolume
    ***  received subvolume (non-incremental)
    >>>  received subvolume (incremental)
--------------------------------------------------------------------------------
/nix
!!! Aborted: Failed to fetch subvolume detail

NOTE: Some errors occurred, which may result in missing backups!
Please check warning and error messages above.

NOTE: Dryrun was active, none of the operations above were actually executed!