diff --git a/async_pg/src/main.rs b/async_pg/src/main.rs
index c285c4bb..aa31f173 100644
--- a/async_pg/src/main.rs
+++ b/async_pg/src/main.rs
@@ -1,4 +1,3 @@
-
 mod models {
     use serde::{Deserialize, Serialize};
     use tokio_pg_mapper_derive::PostgresMapper;
@@ -9,118 +8,110 @@ mod models {
         pub email: String,
         pub first_name: String,
         pub last_name: String,
-        pub username: String
+        pub username: String,
     }
 }
 
-
 mod errors {
-	use actix_web::{HttpResponse, ResponseError};
-	use derive_more::{Display, From};
-	use deadpool_postgres::PoolError;
-	use tokio_postgres::error::Error as PGError;
-	use tokio_pg_mapper::Error as PGMError;
+    use actix_web::{HttpResponse, ResponseError};
+    use deadpool_postgres::PoolError;
+    use derive_more::{Display, From};
+    use tokio_pg_mapper::Error as PGMError;
+    use tokio_postgres::error::Error as PGError;
 
+    #[derive(Display, From, Debug)]
+    pub enum MyError {
+        NotFound,
+        PGError(PGError),
+        PGMError(PGMError),
+        PoolError(PoolError),
+    }
+    impl std::error::Error for MyError {}
 
-	#[derive(Display, From, Debug)]
-	pub enum MyError {
-		NotFound,
-		PGError(PGError),
-		PGMError(PGMError),
-		PoolError(PoolError)
-	}
-	impl std::error::Error for MyError {}
-
-	impl ResponseError for MyError {
-		fn error_response(&self) -> HttpResponse {
-			match *self {
-				MyError::NotFound => HttpResponse::NotFound().finish(),
-				_ => HttpResponse::InternalServerError().finish()
-			}	
-		}
-	}
+    impl ResponseError for MyError {
+        fn error_response(&self) -> HttpResponse {
+            match *self {
+                MyError::NotFound => HttpResponse::NotFound().finish(),
+                _ => HttpResponse::InternalServerError().finish(),
+            }
+        }
+    }
 }
 
-
 mod db {
-	use crate::{errors::MyError, models::User};
-	use deadpool_postgres::Client;
-	use tokio_pg_mapper::FromTokioPostgresRow;
+    use crate::{errors::MyError, models::User};
+    use deadpool_postgres::Client;
+    use tokio_pg_mapper::FromTokioPostgresRow;
 
+    pub async fn add_user(client: &Client, user_info: User) -> Result<User, MyError> {
+        let _stmt = include_str!("../sql/add_user.sql");
+        let _stmt = _stmt.replace("$table_fields", &User::sql_table_fields());
+        let stmt = client.prepare(&_stmt).await.unwrap();
 
-	pub async fn add_user(client: &Client, user_info: User) -> Result<User, MyError> {
-		let _stmt = include_str!("../sql/add_user.sql");
-		let _stmt = _stmt.replace("$table_fields", &User::sql_table_fields());
-		let stmt = client.prepare(&_stmt)
-						 .await
-						 .unwrap();
-
-			client.query(&stmt, 
-					 &[&user_info.email,
-					   &user_info.first_name,
-					   &user_info.last_name,
-                       &user_info.username
-                       ])
-				  .await?
-				  .iter()
-				  .map(|row| User::from_row_ref(row).unwrap())
-				  .collect::<Vec<User>>()
-				  .pop()
-				  .ok_or(MyError::NotFound) // more applicable for SELECTs
-	}
+        client
+            .query(
+                &stmt,
+                &[
+                    &user_info.email,
+                    &user_info.first_name,
+                    &user_info.last_name,
+                    &user_info.username,
+                ],
+            )
+            .await?
+            .iter()
+            .map(|row| User::from_row_ref(row).unwrap())
+            .collect::<Vec<User>>()
+            .pop()
+            .ok_or(MyError::NotFound) // more applicable for SELECTs
+    }
 }
 
-
 mod handlers {
-	use actix_web::{HttpResponse, web, Error};
-	use deadpool_postgres::{Client, Pool};
     use crate::{db, errors::MyError, models::User};
+    use actix_web::{web, Error, HttpResponse};
+    use deadpool_postgres::{Client, Pool};
 
+    pub async fn add_user(
+        user: web::Json<User>,
+        db_pool: web::Data<Pool>,
+    ) -> Result<HttpResponse, Error> {
+        let user_info: User = user.into_inner();
 
-	pub async fn add_user(user: web::Json<User>, db_pool: web::Data<Pool>)
-						-> Result<HttpResponse, Error> {
+        let client: Client =
+            db_pool.get().await.map_err(|err| MyError::PoolError(err))?;
 
-		let user_info: User = user.into_inner();
+        let new_user = db::add_user(&client, user_info).await?;
 
-		let client: Client = 
-            db_pool.get()
-                   .await
-                   .map_err(|err| MyError::PoolError(err))?;
-
-		let new_user = db::add_user(&client, user_info).await?;
-		
-		Ok(HttpResponse::Ok().json(new_user))
-	}
+        Ok(HttpResponse::Ok().json(new_user))
+    }
 }
 
-
-use actix_web::{App, HttpServer, web};
-use deadpool_postgres::{Pool, Manager};
+use actix_web::{web, App, HttpServer};
+use deadpool_postgres::{Manager, Pool};
 use handlers::add_user;
 use tokio_postgres::{Config, NoTls};
 
-
 #[actix_rt::main]
 async fn main() -> std::io::Result<()> {
     const SERVER_ADDR: &str = "127.0.0.1:8080";
 
-	let pg_config = "postgres://test_user:testing@127.0.0.1:5432/testing_db"
-					.parse::<Config>()
-					.unwrap();
+    let pg_config = "postgres://test_user:testing@127.0.0.1:5432/testing_db"
+        .parse::<Config>()
+        .unwrap();
 
-	let pool = Pool::new(
+    let pool = Pool::new(
         Manager::new(pg_config, NoTls),
-		16 // # of connections in pool
+        16, // # of connections in pool
     );
 
-
-    let server = HttpServer::new(move || 
-			App::new()
-				.data(pool.clone())
-				.service(web::resource("/users").route(web::post().to(add_user))) 
-		)
-        .bind(SERVER_ADDR)?
-        .run();
+    let server = HttpServer::new(move || {
+        App::new()
+            .data(pool.clone())
+            .service(web::resource("/users").route(web::post().to(add_user)))
+    })
+    .bind(SERVER_ADDR)?
+    .run();
     println!("Server running at http://{}/", SERVER_ADDR);
 
     server.await