this derivation will be built:
  /nix/store/k7k4cw7lm1zk3hi914v3i6a22mg7h3i5-treefmt-check.drv
building '/nix/store/k7k4cw7lm1zk3hi914v3i6a22mg7h3i5-treefmt-check.drv'
treefmt-check> traversed 519 files
treefmt-check> emitted 355 files for processing
treefmt-check> formatted 355 files (0 changed) in 5.751s

upload niks3: ok