these 4 derivations will be built:
  /nix/store/42k735qw9agdxg65f1m9id9javw0n90g-etc-nix-registry.json.drv
  /nix/store/5dsvlm5i3h5f8bpbp5xm6z3bv7x1r72a-etc.drv
  /nix/store/3rbjj5ipp20j6f3jc9q6h7d6vgpdpbr6-activate.drv
  /nix/store/k1xkjg7g8dl13d3g5li5asx6y6yiankl-nixos-system-tau-26.11.20260906.faf77a3.drv
building '/nix/store/42k735qw9agdxg65f1m9id9javw0n90g-etc-nix-registry.json.drv'
building '/nix/store/5dsvlm5i3h5f8bpbp5xm6z3bv7x1r72a-etc.drv'
building '/nix/store/3rbjj5ipp20j6f3jc9q6h7d6vgpdpbr6-activate.drv'
building '/nix/store/k1xkjg7g8dl13d3g5li5asx6y6yiankl-nixos-system-tau-26.11.20260906.faf77a3.drv'
nixos-system-tau-26.11.20260906.faf77a3> structuredAttrs is enabled

post-build step Route build to niks3: ok
Pushing SBEE-Lab/infra to https://niks3.sjanglab.org
time=2026-09-14T03:04:33.113+09:00 level=INFO msg="Uploading 4 paths to niks3.sjanglab.org (1187 already cached)"
time=2026-09-14T03:04:33.113+09:00 level=INFO msg="Uploading i7cs2r38a75an8br9qb4wba61h41m4dh-etc (54.2KB)"
time=2026-09-14T03:04:33.113+09:00 level=INFO msg="Uploading 3bjdk62faxglwxzmggfh7s4gfkg8n2pf-nixos-system-tau-26.11.20260906.faf77a3 (245.9KB)"
time=2026-09-14T03:04:33.113+09:00 level=INFO msg="Uploading 330dnrhmh8f1rzankqy7qqsnyqj24xli-source (4.9MB)"
time=2026-09-14T03:04:33.113+09:00 level=INFO msg="Uploading vz5ljaxlvw6h40xrs1hxahzmlg1ryfa9-etc-nix-registry.json (552B)"
time=2026-09-14T03:04:38.646+09:00 level=INFO msg="Uploading 4 narinfos"
time=2026-09-14T03:04:39.896+09:00 level=INFO msg="Upload complete. (7.056s)"