this derivation will be built:
  /nix/store/9pv22sz9ildrkhxq7bvwf0f13iw6nwpv-nixos-system-testmachine-26.05.20260911.21a67dc.drv
building '/nix/store/9pv22sz9ildrkhxq7bvwf0f13iw6nwpv-nixos-system-testmachine-26.05.20260911.21a67dc.drv'
nixos-system-testmachine-26.05.20260911.21a67dc> structuredAttrs is enabled

upload niks3: ok