this derivation will be built:
  /nix/store/20rs6vajqyp9ya6nx8lxxmyggqdqv56a-treefmt-check.drv
building '/nix/store/20rs6vajqyp9ya6nx8lxxmyggqdqv56a-treefmt-check.drv'
treefmt-check> treefmt v2.5.0traversed 771 files
treefmt-check> emitted 472 files for processing
treefmt-check> formatted 472 files (0 changed) in 870ms