this derivation will be built:
  /nix/store/0qrmn07c8wbhhw3m8a877rrxm81fl1c4-treefmt-check.drv
bld4: building 0qrmn07c8wbhhw3m8a877rrxm81fl1c4-treefmt-check.drv
traversed 517 files
emitted 354 files for processing
formatted 354 files (0 changed) in 29.319s