these 2 derivations will be built:
  /nix/store/g61b39vycbq6gnqw17fiqxqq40q719ih-nix-grpc-store-0.2.3.drv
  /nix/store/cvhpyfhn4lj3m9az71l9pjjc669bdnxn-nix-grpc-store-exit-stress.drv