Wireup stdout & stderr

src/main.rs

@@ -14,7 +14,9 @@ fn main() {
     
     if output.status.success() {
         let std_out = std::str::from_utf8(&output.stdout).unwrap();
-        println!("{}", std_out)
+        println!("{}", std_out);
+        let std_err = std::str::from_utf8(&output.stderr).unwrap();
+        println!("{}", std_err);
     } else {
         std::process::exit(1);
     }