these 2 derivations will be built:
  /nix/store/ayfpaad5hqz53s8nfxq6z2ibhci76cd2-nix-grpc-store-0.2.2.drv
  /nix/store/8nfsm0l0fzfcn79rdv9jr242sy7hvxx2-nix-grpc-store-exit-stress.drv