this derivation will be built:
  /nix/store/n82698i1v70szxlhwkq07kn3x3150h4d-treefmt-check.drv
bld4: building n82698i1v70szxlhwkq07kn3x3150h4d-treefmt-check.drv
traversed 517 files
emitted 354 files for processing
formatted 354 files (0 changed) in 5.946s