these 2 derivations will be built:
  /nix/store/49ljm1a7lls92ypzcpc8wg0baj85s7ss-nix-grpc-store-0.2.2.drv
  /nix/store/6gbc1b5i8np447vd4w64gxngb1lzm5ia-nix-grpc-store-exit-stress.drv