this derivation will be built:
  /nix/store/nkn2mc1nj1bmwaaf01hnki98m1z4axl3-treefmt-check.drv
bld4: building nkn2mc1nj1bmwaaf01hnki98m1z4axl3-treefmt-check.drv
traversed 517 files
emitted 354 files for processing
formatted 354 files (0 changed) in 5.862s