this derivation will be built:
  /nix/store/l39x9ja3kxzf4w95dqs7ifcrg4s3jq7q-treefmt-check.drv
building '/nix/store/l39x9ja3kxzf4w95dqs7ifcrg4s3jq7q-treefmt-check.drv'
treefmt-check> traversed 519 files
treefmt-check> emitted 355 files for processing
treefmt-check> formatted 355 files (0 changed) in 13.835s

upload niks3: ok