use as_str instead clone.

src/main.rs

@@ -53,7 +53,7 @@ fn main() -> io::Result<()> {
     let args: Vec<String> = env::args().collect();
 
     let start_path = if args.len() > 1 {
-        PathBuf::from(args[1].clone())
+        PathBuf::from(args[1].as_str())
     } else {
         PathBuf::from(".")
     };