this derivation will be built:
  /nix/store/na618hkg4837m81ksvdn0ncskn3qc8dq-docs-reference.drv
building '/nix/store/na618hkg4837m81ksvdn0ncskn3qc8dq-docs-reference.drv'

post-build step Upload to niks3: ok
time=2026-09-03T10:09:20.911Z level=INFO msg="Uploading 0 paths to 127.0.0.1 (1 already cached)"
time=2026-09-03T10:09:21.520Z level=INFO msg="Uploading 1 narinfos"
time=2026-09-03T10:09:22.197Z level=INFO msg="Upload complete. (1.316s)"