this derivation will be built:
  /nix/store/ph3d5k4s0fdnx2vqb7k4fv29if4fi2z3-treefmt-check.drv
building '/nix/store/ph3d5k4s0fdnx2vqb7k4fv29if4fi2z3-treefmt-check.drv'
treefmt-check> traversed 446 files
treefmt-check> emitted 311 files for processing
treefmt-check> formatted 311 files (0 changed) in 2.576s

post-build step Upload to niks3: ok
time=2026-08-22T18:48:41.698Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-08-22T18:48:42.216Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-22T18:48:42.654Z level=INFO msg="Upload complete. (1.033s)"