this derivation will be built:
  /nix/store/7379wypyx8qd1c3dv48xn0fh2czjmv9s-treefmt-check.drv
bld4: building 7379wypyx8qd1c3dv48xn0fh2czjmv9s-treefmt-check.drv
traversed 517 files
emitted 354 files for processing
formatted 354 files (0 changed) in 20.507s