these 2 derivations will be built:
  /nix/store/kn5ni950fiym8jad9aikai50zvr7nbaz-nix-grpc-store-0.2.3.drv
  /nix/store/zgmc1c5p6nkb6wfhalc7mf7dqr4x5b96-nix-grpc-store-exit-stress.drv