these 3 derivations will be built:
  /nix/store/p6bppvnaqavhj1yx2ldf6ckivgc5z384-treefmt.toml.drv
  /nix/store/0y4866wcnj4psj3mw7ljmvi8gzqmkv68-treefmt.drv
  /nix/store/8xmb436yxrck4z9i07n436ssr317v8ak-treefmt-check.drv
error: Cannot build '/nix/store/8xmb436yxrck4z9i07n436ssr317v8ak-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/x8bpmj609y9mcbyizsgdqbkx7jwmgkka-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 175ms
       > Error: failed to finalise formatting: formatting failures detected
       For full logs, run:
         nix log /nix/store/8xmb436yxrck4z9i07n436ssr317v8ak-treefmt-check.drv