diff --git a/multipart-s3/Cargo.toml b/multipart-s3/Cargo.toml
index 0d89e08..533081a 100644
--- a/multipart-s3/Cargo.toml
+++ b/multipart-s3/Cargo.toml
@@ -14,7 +14,6 @@ actix-rt = "1.0.0"
 rusoto_s3 = "0.43.0"
 rusoto_core = "0.43.0"
 bytes = { version = "0.5", features = ["serde"] }
-serde = { version = "1.0.104", features=["derive"] }
+serde = { version = "1.0.104", features = ["derive"] }
 serde_json = "1.0"
-serde-value = "0.6.0"
-dotenv = "0.15.0"
\ No newline at end of file
+dotenv = "0.15.0"
diff --git a/multipart-s3/src/main.rs b/multipart-s3/src/main.rs
index 31e9db3..7f08f07 100644
--- a/multipart-s3/src/main.rs
+++ b/multipart-s3/src/main.rs
@@ -1,38 +1,29 @@
-use std::io::Write;
-extern crate dotenv;
 use actix_multipart::Multipart;
 use actix_web::{middleware, web, App, Error, HttpResponse, HttpServer};
 use dotenv::dotenv;
-use futures::StreamExt;
-mod utils;
-
+use serde::{Deserialize, Serialize};
 use std::borrow::BorrowMut;
 use std::env;
-use utils::upload::{
-    delete_object, save_file as upload_save_file, split_payload, UplodFile,
-};
-extern crate rusoto_core;
-extern crate rusoto_s3;
+use utils::upload::{save_file as upload_save_file, split_payload, UploadFile};
 
-mod model {
-    use serde::{Deserialize, Serialize};
-    #[derive(Deserialize, Serialize, Debug)]
-    pub struct InpAdd {
-        pub text: String,
-        pub number: i32,
-    }
+mod utils;
+
+#[derive(Deserialize, Serialize, Debug)]
+pub struct InpAdd {
+    pub text: String,
+    pub number: i32,
 }
 
 async fn save_file(mut payload: Multipart) -> Result<HttpResponse, Error> {
     let pl = split_payload(payload.borrow_mut()).await;
     println!("bytes={:#?}", pl.0);
-    let mut inp_info: model::InpAdd = serde_json::from_slice(&pl.0).unwrap();
+    let inp_info: InpAdd = serde_json::from_slice(&pl.0).unwrap();
     println!("converter_struct={:#?}", inp_info);
     println!("tmpfiles={:#?}", pl.1);
     //make key
     let s3_upload_key = format!("projects/{}/", "posts_id");
     //create tmp file and upload s3 and remove tmp file
-    let upload_files: Vec<UplodFile> =
+    let upload_files: Vec<UploadFile> =
         upload_save_file(pl.1, s3_upload_key).await.unwrap();
     println!("upload_files={:#?}", upload_files);
     Ok(HttpResponse::Ok().into())
@@ -84,16 +75,16 @@ fn index() -> HttpResponse {
 #[actix_rt::main]
 async fn main() -> std::io::Result<()> {
     dotenv().ok();
-    let AWS_ACCESS_KEY_ID =
-        env::var("AWS_ACCESS_KEY_ID").expect("DATABASE_URL must be set");
-    let AWS_SECRET_ACCESS_KEY =
+    let aws_access_key_id =
+        env::var("AWS_ACCESS_KEY_ID").expect("AWS_ACCESS_KEY_ID must be set");
+    let aws_secret_access_key =
         env::var("AWS_SECRET_ACCESS_KEY").expect("AWS_SECRET_ACCESS_KEY must be set");
-    let AWS_S3_BUCKET_NAME =
+    let aws_s3_bucket_name =
         env::var("AWS_S3_BUCKET_NAME").expect("AWS_S3_BUCKET_NAME must be set");
 
-    println!("{}", AWS_ACCESS_KEY_ID);
-    println!("{}", AWS_SECRET_ACCESS_KEY);
-    println!("{}", AWS_S3_BUCKET_NAME);
+    println!("{}", aws_access_key_id);
+    println!("{}", aws_secret_access_key);
+    println!("{}", aws_s3_bucket_name);
 
     std::env::set_var("RUST_LOG", "actix_server=info,actix_web=info");
     std::fs::create_dir_all("./tmp").unwrap();
diff --git a/multipart-s3/src/utils/s3.rs b/multipart-s3/src/utils/s3.rs
index c7cc101..5e2aaee 100644
--- a/multipart-s3/src/utils/s3.rs
+++ b/multipart-s3/src/utils/s3.rs
@@ -1,9 +1,10 @@
-use crate::rusoto_s3::S3;
 use rusoto_core::Region;
+use rusoto_s3::S3;
 use rusoto_s3::{DeleteObjectRequest, PutObjectRequest, S3Client};
 use std::io::Read;
 
 pub struct Client {
+    #[allow(dead_code)]
     region: Region,
     s3: S3Client,
     bucket_name: String,
@@ -33,7 +34,7 @@ impl Client {
     pub async fn put_object(&self, localfilepath: &str, key: &str) -> String {
         let mut file = std::fs::File::open(localfilepath).unwrap();
         let mut contents: Vec<u8> = Vec::new();
-        file.read_to_end(&mut contents);
+        let _ = file.read_to_end(&mut contents);
         let put_request = PutObjectRequest {
             bucket: self.bucket_name.to_owned(),
             key: key.to_owned(),
diff --git a/multipart-s3/src/utils/upload.rs b/multipart-s3/src/utils/upload.rs
index d5cf896..8bd756f 100644
--- a/multipart-s3/src/utils/upload.rs
+++ b/multipart-s3/src/utils/upload.rs
@@ -4,20 +4,19 @@ use actix_web::{web, Error};
 use bytes::Bytes;
 use futures::StreamExt;
 use serde::{Deserialize, Serialize};
-use serde_json::{Map as serdeMap, Value};
 use std::convert::From;
 use std::io::Write;
 
 #[derive(Deserialize, Serialize, Debug, Clone)]
-pub struct UplodFile {
+pub struct UploadFile {
     pub filename: String,
     pub key: String,
     pub url: String,
 }
 
-impl From<Tmpfile> for UplodFile {
+impl From<Tmpfile> for UploadFile {
     fn from(tmp_file: Tmpfile) -> Self {
-        UplodFile {
+        UploadFile {
             filename: tmp_file.name,
             key: tmp_file.s3_key,
             url: tmp_file.s3_url,
@@ -104,21 +103,21 @@ pub async fn split_payload(payload: &mut Multipart) -> (bytes::Bytes, Vec<Tmpfil
 pub async fn save_file(
     tmp_files: Vec<Tmpfile>,
     s3_upload_key: String,
-) -> Result<Vec<UplodFile>, Error> {
-    let mut arr: Vec<UplodFile> = Vec::new();
-    let mut iter = tmp_files.iter();
+) -> Result<Vec<UploadFile>, Error> {
+    let mut arr: Vec<UploadFile> = Vec::with_capacity(tmp_files.len());
 
-    while let Some(item) = iter.next() {
+    for item in tmp_files {
         let mut tmp_file: Tmpfile = item.clone();
         tmp_file
             .s3_upload_and_tmp_remove(s3_upload_key.clone())
             .await;
-        arr.push(UplodFile::from(tmp_file));
+        arr.push(UploadFile::from(tmp_file));
     }
     Ok(arr)
 }
 
-pub async fn delete_object(mut list: Vec<String>) {
+#[allow(unused)]
+pub async fn delete_object(list: Vec<String>) {
     for key in list {
         Client::new().delete_object(key).await;
     }