message: constr errs to stdout
diff: @@ -226,7 +226,7 @@ int command(int argc, const char *argv[]) {
  // Instantiate model
  stan::model::model_base &model
  - = new_model(*var_context, random_seed, &std::cerr);
  + = new_model(*var_context, random_seed, &std::cout);
  std::vector<std::string> model_compile_info = model.model_compile_info();
  