this derivation will be built:
  /nix/store/ck0v00dxyr7bnylwcyxfdiz4axvq1z7d-treefmt-check.drv
building '/nix/store/ck0v00dxyr7bnylwcyxfdiz4axvq1z7d-treefmt-check.drv'
treefmt-check> traversed 519 files
treefmt-check> emitted 355 files for processing
treefmt-check> formatted 355 files (0 changed) in 3.656s

upload niks3: ok