these 2 derivations will be built:
  /nix/store/ln5ii2k4rqpi0bfbs4pkm005vcnf0gb8-nix-grpc-store-0.2.3.drv
  /nix/store/4jak1fkw64l4vb2lnlyd1lh8xslx1csa-nix-grpc-store-exit-stress.drv