these 3 derivations will be built:
  /nix/store/mv9ak0b5zdv3asshyyq0s0r5s4xcihv3-treefmt.toml.drv
  /nix/store/rk289j1azhrvljr2admbz0fva4hnqqh2-treefmt.drv
  /nix/store/c44m1mdmpg89b9mjvgbs7gni1rznsa76-treefmt-check.drv
error: Cannot build '/nix/store/c44m1mdmpg89b9mjvgbs7gni1rznsa76-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/2mdzdgbp923g63q76j4vc6fx8am9y6an-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 1.562s
       > Error: failed to finalise formatting: formatting failures detected
       For full logs, run:
         nix log /nix/store/c44m1mdmpg89b9mjvgbs7gni1rznsa76-treefmt-check.drv