these 3 derivations will be built:
  /nix/store/8bsvqndkivq9gmvlxhdpq5ll9dq4x7p5-treefmt.toml.drv
  /nix/store/az2izhayq7dyx8iq31825a8bsim11g5s-treefmt.drv
  /nix/store/mzk1kj38wr9rf52jl3fh3imx869wlby6-treefmt-check.drv
error: Cannot build '/nix/store/mzk1kj38wr9rf52jl3fh3imx869wlby6-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/zhag026a5bbmg78jh3k651mpiffdzdjy-treefmt-check
       Last 25 log lines:
       >
       > CPY001 Missing copyright notice at top of file
       > --> tests/test_escape_attr.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> tests/test_github_actions.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> tests/test_nixpkgs.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> tests/test_pr.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> tests/test_rev.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> tests/test_wip.py:1:1
       >
       > Found 34 errors (1 fixed, 33 remaining).
       >
       > traversed 62 files
       > emitted 46 files for processing
       > formatted 13 files (1 changed) in 114ms
       > Error: failed to finalise formatting: formatting failures detected
       For full logs, run:
         nix log /nix/store/mzk1kj38wr9rf52jl3fh3imx869wlby6-treefmt-check.drv