this derivation will be built:
  /nix/store/0mpvimn1irnf2g6byg10nm3kgx2ig2f7-treefmt-check.drv
bld4: building 0mpvimn1irnf2g6byg10nm3kgx2ig2f7-treefmt-check.drv
traversed 517 files
emitted 354 files for processing
formatted 354 files (0 changed) in 5.885s