these 2 derivations will be built:
  /nix/store/q5acbs4g6n8hd0j8c52xjvwbmd24gsjb-nix-grpc-store-0.1.0.drv
  /nix/store/ql4x1xxaqw1g6qqfp2m88y2wk8n94d3n-nix-grpc-store-exit-stress.drv