these 2 derivations will be built:
  /nix/store/zjlha8pid01skl4j2n8cddj42rv79ydz-nix-grpc-store-0.2.2.drv
  /nix/store/jl2ljlsaws9pi6avc2033iiv2q628hcv-nix-grpc-store-exit-stress.drv