these 2 derivations will be built:
  /nix/store/m580g8jfdk08ils1v1vxsxcai6w171f3-iets-conformance-adapter.drv
  /nix/store/b7w8vql6yfx22azfn1p2gfkfmmhan8nl-nix-conformance-iets.drv
building '/nix/store/m580g8jfdk08ils1v1vxsxcai6w171f3-iets-conformance-adapter.drv'
iets-conformance-adapter> structuredAttrs is enabled
building '/nix/store/b7w8vql6yfx22azfn1p2gfkfmmhan8nl-nix-conformance-iets.drv'