this derivation will be built:
  /nix/store/j33a0issp2cm6d9jgwjsscqv3n5c0p7k-treefmt-check.drv
building '/nix/store/j33a0issp2cm6d9jgwjsscqv3n5c0p7k-treefmt-check.drv'
treefmt-check> traversed 517 files
treefmt-check> emitted 354 files for processing
treefmt-check> formatted 354 files (0 changed) in 17.381s

upload niks3: ok