fix by cargo

src/main.rs

@@ -1,11 +1,10 @@
 mod polygon_draw;
-use polygon_draw::{Polygon, PolygonFrame};
+use polygon_draw::Polygon;
 
 mod music;
 use music::Music;
 
 mod utils;
-use utils::string_to_color;
 
 use std::fs;
 
@@ -18,7 +17,6 @@ use iced::{
     },
 };
 
-use serde::{Deserialize, Serialize};
 
 use std::f32::consts::PI;
 use std::time::Instant;

src/music.rs

@@ -3,12 +3,11 @@ use crate::{polygon_draw::*, utils::string_to_color};
 use serde::{Deserialize, Serialize};
 
 use kira::{
-    AudioManager, AudioManagerSettings, DefaultBackend, sound::static_sound::StaticSoundData,
+    AudioManager, sound::static_sound::StaticSoundData,
 };
 
 use std::f32::consts::PI;
 use std::time::Duration;
-use std::time::Instant;
 
 #[derive(Serialize, Deserialize)]
 pub struct Music {

src/utils.rs

@@ -1,8 +1,6 @@
 use crate::Polygon;
 use iced::Color;
-use kira::{
-    AudioManager, AudioManagerSettings, DefaultBackend, sound::static_sound::StaticSoundData,
-};
+use kira::sound::static_sound::StaticSoundData;
 pub fn string_to_color<S: AsRef<str>>(s: S) -> Color {
     match s.as_ref() {
         "Green" => Color::from_rgb(0.0, 1.0, 0.0),