these 2 derivations will be built:
  /nix/store/9agvpcm1d6scf7wd9kfhjwrczyql5dn7-nix-grpc-store-0.2.1.drv
  /nix/store/3lxcs4lb6i753glfx9s46cvzyj5v8cfs-nix-grpc-store-exit-stress.drv