these 3 derivations will be built:
  /nix/store/f3q67lzvn6p8qlyf77rmv1ai8wvmkrn9-treefmt.toml.drv
  /nix/store/73pfmgv9npflm3c30x1kiss4wswxz194-treefmt.drv
  /nix/store/x6m4irx0rzs2lvsvvs29y1q1r1xqxn2y-treefmt-check.drv
this path will be fetched (13.6 MiB download, 68.6 MiB unpacked):
  /nix/store/51gl78yq0vvaqn0jib16wfhhfw3cp8i7-python3.14-mypy-2.1.0
error: build of '/nix/store/x6m4irx0rzs2lvsvvs29y1q1r1xqxn2y-treefmt-check.drv' on 'ssh-ng://customer@mac02' failed: Cannot build '/nix/store/x6m4irx0rzs2lvsvvs29y1q1r1xqxn2y-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/j8jnfyc9h9b6fyvpfd0b05mj57qgfxfx-treefmt-check
       Last 25 log lines:
       >
       > CPY001 Missing copyright notice at top of file
       > --> tests/test_benchmark.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> tests/test_cli.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> tests/test_command.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> tests/test_git_revision.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> tests/test_parser.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> tests/test_specs.py:1:1
       >
       > Found 17 errors.
       >
       > traversed 31 files
       > emitted 22 files for processing
       > formatted 5 files (0 changed) in 5.606s
       > Error: failed to finalise formatting: formatting failures detected
       For full logs, run:
         nix log /nix/store/x6m4irx0rzs2lvsvvs29y1q1r1xqxn2y-treefmt-check.drv
error: Cannot build '/nix/store/x6m4irx0rzs2lvsvvs29y1q1r1xqxn2y-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/j8jnfyc9h9b6fyvpfd0b05mj57qgfxfx-treefmt-check