this derivation will be built:
  /nix/store/v1iqkpn0hww24g6s4i5h0hs3nr3xkh5f-treefmt-check.drv
building '/nix/store/v1iqkpn0hww24g6s4i5h0hs3nr3xkh5f-treefmt-check.drv'
treefmt-check> traversed 446 files
treefmt-check> emitted 311 files for processing
treefmt-check> formatted 311 files (0 changed) in 3.418s

post-build step Upload to niks3: ok
time=2026-08-24T18:38:02.907Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-08-24T18:38:03.626Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-24T18:38:04.008Z level=INFO msg="Upload complete. (1.175s)"