this derivation will be built:
  /nix/store/v3nhnyffz8kwnzi8lh9ah1asl810hwqh-treefmt-check.drv
building '/nix/store/v3nhnyffz8kwnzi8lh9ah1asl810hwqh-treefmt-check.drv'
treefmt-check> traversed 499 files
treefmt-check> emitted 267 files for processing
treefmt-check> formatted 267 files (0 changed) in 1.287s

post-build step Upload to niks3: ok
time=2026-09-19T20:16:13.916Z level=INFO msg="Uploading 0 paths to 127.0.0.1 (1 already cached)"
time=2026-09-19T20:16:14.628Z level=INFO msg="Uploading 1 narinfos"
time=2026-09-19T20:16:14.916Z level=INFO msg="Upload complete. (1.021s)"