this derivation will be built:
  /nix/store/3vhfkld047n53j4vfx8d7nvgm9samb0i-treefmt-check.drv
building '/nix/store/3vhfkld047n53j4vfx8d7nvgm9samb0i-treefmt-check.drv'
treefmt-check> traversed 439 files
treefmt-check> emitted 305 files for processing
treefmt-check> formatted 305 files (0 changed) in 12.192s

post-build step Upload to niks3: ok
time=2026-08-18T18:21:20.893Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-08-18T18:21:21.276Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-18T18:21:21.623Z level=INFO msg="Upload complete. (818ms)"