update dependencies

src/main.rs

@@ -17,7 +17,7 @@ fn main() {
         Some("raw") => Box::new(RawController::new(p)),
         Some("lin") => Box::new(LinController::new(p)),
         Some("log") => Box::new(LogController::new(p)),
-        Some(_) | None => panic!(ERROR_MSG),
+        Some(_) | None => panic!("{}", ERROR_MSG),
     };
 
     if matches.is_present("list") {
@@ -41,7 +41,7 @@ fn main() {
     } else if matches.is_present("ful") {
         controller.set_brightness(controller.get_max_brightness());
     } else {
-        panic!(ERROR_MSG);
+        panic!("{}", ERROR_MSG);
     }
 
     exit(exitcode::OK);