diff --git a/src/api/auth.rs b/src/api/auth.rs
index c05552f..dd4d6c9 100644
--- a/src/api/auth.rs
+++ b/src/api/auth.rs
@@ -1,7 +1,6 @@
 use axum::{
     Json, Router,
     extract::{Query, State},
-    http::StatusCode,
     response::Redirect,
     routing::get,
 };
@@ -167,7 +166,7 @@ async fn osu_callback(
     let existing_user = user_service.find_by_osu_id(&user_data.id).await?;
 
     let user = match existing_user {
-        Some(mut existing) => {
+        Some(existing) => {
             // 更新现有用户
             let update_request = crate::dto::user::UpdateUserRequest {
                 username: Some(user_data.username),
diff --git a/src/api/tournament_settings.rs b/src/api/tournament_settings.rs
index e4360e6..974d360 100644
--- a/src/api/tournament_settings.rs
+++ b/src/api/tournament_settings.rs
@@ -3,7 +3,6 @@ use axum::{
     extract::{Query, State},
     routing::{get, put},
 };
-use utoipa::ToSchema;
 
 use crate::{
     dto::{
diff --git a/src/dto/map_comments.rs b/src/dto/map_comments.rs
index 07985e2..7cff801 100644
--- a/src/dto/map_comments.rs
+++ b/src/dto/map_comments.rs
@@ -1,4 +1,4 @@
-use serde::{Deserialize, Serialize};
+use serde::Deserialize;
 use utoipa::ToSchema;
 
 #[derive(Debug, Deserialize, ToSchema)]
diff --git a/src/dto/map_selections.rs b/src/dto/map_selections.rs
index 5cbe0c4..d90ced8 100644
--- a/src/dto/map_selections.rs
+++ b/src/dto/map_selections.rs
@@ -1,4 +1,4 @@
-use serde::{Deserialize, Serialize};
+use serde::Deserialize;
 use utoipa::ToSchema;
 
 #[derive(Debug, Deserialize, ToSchema)]
diff --git a/src/dto/match_rooms.rs b/src/dto/match_rooms.rs
index 355db7e..c5d0f0f 100644
--- a/src/dto/match_rooms.rs
+++ b/src/dto/match_rooms.rs
@@ -1,5 +1,5 @@
 use sea_orm::prelude::{Date, Time};
-use serde::{Deserialize, Serialize};
+use serde::Deserialize;
 use utoipa::ToSchema;
 
 #[derive(Debug, Deserialize, ToSchema)]
diff --git a/src/dto/match_schedules.rs b/src/dto/match_schedules.rs
index 54a4328..e2d9bba 100644
--- a/src/dto/match_schedules.rs
+++ b/src/dto/match_schedules.rs
@@ -1,4 +1,4 @@
-use serde::{Deserialize, Serialize};
+use serde::Deserialize;
 use utoipa::ToSchema;
 
 #[derive(Debug, Deserialize, ToSchema)]
diff --git a/src/dto/messages.rs b/src/dto/messages.rs
index e3b990e..a20dbf0 100644
--- a/src/dto/messages.rs
+++ b/src/dto/messages.rs
@@ -1,4 +1,4 @@
-use serde::{Deserialize, Serialize};
+use serde::Deserialize;
 use utoipa::ToSchema;
 
 #[derive(Debug, Deserialize, ToSchema)]
diff --git a/src/dto/player_matchups.rs b/src/dto/player_matchups.rs
index 68afc78..4be7946 100644
--- a/src/dto/player_matchups.rs
+++ b/src/dto/player_matchups.rs
@@ -1,4 +1,4 @@
-use serde::{Deserialize, Serialize};
+use serde::Deserialize;
 use utoipa::ToSchema;
 
 #[derive(Debug, Deserialize, ToSchema)]
diff --git a/src/main.rs b/src/main.rs
index d583083..a9efdd8 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,4 @@
-use std::sync::Arc;
 
-use axum::Router;
 use config::Config;
 use sea_orm::Database;
 use service::ServiceState;
diff --git a/src/service/match_rooms.rs b/src/service/match_rooms.rs
index a3e00ba..117f882 100644
--- a/src/service/match_rooms.rs
+++ b/src/service/match_rooms.rs
@@ -1,7 +1,6 @@
 use sea_orm::{
     ActiveModelTrait, ColumnTrait, DatabaseConnection, EntityTrait, PaginatorTrait, QueryFilter,
     QueryOrder, Set,
-    prelude::{Date, Time},
 };
 
 use crate::{