this derivation will be built:
  /nix/store/v6vwr3h09m4mll3xkfak861liq8k0iyr-treefmt-check.drv
bld4: building v6vwr3h09m4mll3xkfak861liq8k0iyr-treefmt-check.drv
traversed 517 files
emitted 354 files for processing
formatted 354 files (0 changed) in 8.703s