Rename conf to raw_conf, conf will be the parsed configuration String

src/main.rs

@@ -59,7 +59,7 @@ fn open_file(filename: &str) -> io::Result<String> {
 
 fn main() {
     let mut robot_pool: Vec<Robot> = Vec::new();
-    let conf = open_file("two_robots.txt");
+    let raw_conf = open_file("two_robots.txt");
 }
 
 #[cfg(test)]