these 2 derivations will be built:
  /nix/store/5fk7m6gq68k9djpx00ji1zlp1czbnnzz-nix-grpc-store-0.1.0.drv
  /nix/store/ywqm0x3w0kv0ngbzvll6bnk6n8mnzrph-nix-grpc-store-exit-stress.drv