these 2 derivations will be built:
  /nix/store/ymnjxdjgfr3xd595m42x1lcniygqqgy8-iets-conformance-adapter.drv
  /nix/store/dfjx52aha4x96336ngq5lzi7m5yjxkcf-nix-conformance-iets.drv
building '/nix/store/ymnjxdjgfr3xd595m42x1lcniygqqgy8-iets-conformance-adapter.drv'
iets-conformance-adapter> structuredAttrs is enabled
building '/nix/store/dfjx52aha4x96336ngq5lzi7m5yjxkcf-nix-conformance-iets.drv'