these 4 derivations will be built:
  /nix/store/kmnz54srl5xfqnidr2xfr913c10cvr4z-iets-0.1.0.drv
  /nix/store/p914agmdm9yc4wyak5n15rsla4nbqxmh-iets-fuzz-diff-0.0.0.drv
  /nix/store/ymkpxaxik2cd3lq922v6zd774nhsrv6r-iets-conformance-adapter.drv
  /nix/store/cy6pkqnnylj0wbjbs2jc6qr1d219h4ws-nix-conformance-iets.drv
building '/nix/store/ymkpxaxik2cd3lq922v6zd774nhsrv6r-iets-conformance-adapter.drv'
iets-conformance-adapter> structuredAttrs is enabled
building '/nix/store/cy6pkqnnylj0wbjbs2jc6qr1d219h4ws-nix-conformance-iets.drv'