these 2 derivations will be built:
  /nix/store/fnissi6hcn2rdnr28bbfzmq2v9wm4q7c-nix-grpc-store-0.2.3.drv
  /nix/store/ijc7ln24isclfbq4f25bgylcm3w130p4-nix-grpc-store-exit-stress.drv