this derivation will be built:
  /nix/store/hzssg6pfb0mjhyp1cj2m6aak1ndscc1a-treefmt-check.drv
building '/nix/store/hzssg6pfb0mjhyp1cj2m6aak1ndscc1a-treefmt-check.drv'
treefmt-check> traversed 551 files
treefmt-check> emitted 304 files for processing
treefmt-check> formatted 304 files (0 changed) in 1.539s

post-build step Upload to niks3: ok
time=2026-09-23T09:12:05.722Z level=INFO msg="Uploading 0 paths to 127.0.0.1 (1 already cached)"
time=2026-09-23T09:12:05.936Z level=INFO msg="Uploading 1 narinfos"
time=2026-09-23T09:12:06.645Z level=INFO msg="Upload complete. (944ms)"