these 2 derivations will be built:
  /nix/store/jbr667vd4xf0gkk17y2vdqw6x2frb0fh-nix-grpc-store-0.1.0-beta.4.drv
  /nix/store/jjiml1wrah0szs2zvfx7sni5h2hr8vxn-nix-grpc-store-exit-stress.drv