this derivation will be built:
  /nix/store/yhs67xmp19w4z5l6g2y27jc1c3rsx7fi-treefmt-check.drv
building '/nix/store/yhs67xmp19w4z5l6g2y27jc1c3rsx7fi-treefmt-check.drv'
treefmt-check> traversed 458 files
treefmt-check> emitted 320 files for processing
treefmt-check> formatted 320 files (0 changed) in 3.315s

post-build step Upload to niks3: ok
time=2026-09-01T09:18:06.682Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-09-01T09:18:07.076Z level=INFO msg="Uploading 1 narinfos"
time=2026-09-01T09:18:07.490Z level=INFO msg="Upload complete. (935ms)"