these 2 derivations will be built:
  /nix/store/352yb2b6dwnq05sak303n89h4y0rbbh0-iets-conformance-adapter.drv
  /nix/store/652nzs9935jan4yldx89nyw5xmqya5qa-nix-conformance-iets.drv
building '/nix/store/352yb2b6dwnq05sak303n89h4y0rbbh0-iets-conformance-adapter.drv'
iets-conformance-adapter> structuredAttrs is enabled
building '/nix/store/652nzs9935jan4yldx89nyw5xmqya5qa-nix-conformance-iets.drv'