this derivation will be built:
  /nix/store/j5ylhkrj7x2ci7x6ic8rbd3il6pvsbw0-treefmt-check.drv
building '/nix/store/j5ylhkrj7x2ci7x6ic8rbd3il6pvsbw0-treefmt-check.drv'
treefmt-check> traversed 554 files
treefmt-check> emitted 374 files for processing
treefmt-check> formatted 374 files (0 changed) in 2.57s

upload niks3: ok