move parse out of loop

src/main.rs

@@ -30,8 +30,8 @@ fn main() {
         	run_lights(&mut controller, &lights).expect("Error running lights controller.");
 	}
     });
-    let mul_string = format_multiline("unit");
-    let res: Result<Vec<Box<dyn Pattern>>, ParseError> = mul_string.iter()
+    let pattern = format_multiline("unit");
+    let res: Result<Vec<Box<dyn Pattern>>, ParseError> = pattern.iter()
         .map(|x: &Vec<String>| parse_line((*x).clone()))
         .collect();
     if res.is_ok() {