these 2 derivations will be built:
  /nix/store/7dd6m1lracycv9cxn43m0c6f7qym7d4g-nix-grpc-store-0.2.3.drv
  /nix/store/531qi5a1shfx78hsyydv6zazxlr62kmm-nix-grpc-store-exit-stress.drv