diff --git a/src/cookies.rs b/src/cookies.rs
index f94c328..239ed95 100644
--- a/src/cookies.rs
+++ b/src/cookies.rs
@@ -7,4 +7,4 @@ pub mod user {
     pub const USER_NAME_COOKIE: &str = "user_name";
     pub const USER_DISCRIMINATOR_COOKIE: &str = "user_discriminator";
     pub const USER_AVATAR_COOKIE: &str = "user_avatar";
-}
\ No newline at end of file
+}
diff --git a/src/main.rs b/src/main.rs
index b08cb35..8e41c2d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -25,9 +25,11 @@ async fn rocket() -> _ {
     let token = env::var("DISCORD_TOKEN").expect("Expected a token in the environment");
     let http = Http::new(&token);
 
-    let config = rocket::Config::figment()
-        .merge(("port", 1313))
-        .merge(("secret_key", env::var("SECRET").expect("Must have SECRET defined in .env for private cookie persistence")));
+    let config = rocket::Config::figment().merge(("port", 1313)).merge((
+        "secret_key",
+        env::var("SECRET")
+            .expect("Must have SECRET defined in .env for private cookie persistence"),
+    ));
     rocket::custom(config)
         .manage(http)
         .mount(
diff --git a/src/models/challenge.rs b/src/models/challenge.rs
index e2a46e5..99a9f39 100644
--- a/src/models/challenge.rs
+++ b/src/models/challenge.rs
@@ -31,7 +31,8 @@ impl Challenge {
         let arena = Arena::new();
         let root = parse_document(
             &arena,
-            &fs::read_to_string(format!("content/challenges/{number}.md")).expect("Couldn't find challenge file"),
+            &fs::read_to_string(format!("content/challenges/{number}.md"))
+                .expect("Couldn't find challenge file"),
             &options,
         );
         if let Some(node) = root.children().next() {
@@ -48,7 +49,7 @@ impl Challenge {
             }
         } else {
             panic!("Empty document!")
-        }   
+        }
     }
 }
 
diff --git a/src/models/mod.rs b/src/models/mod.rs
index c0f81eb..41f1ca0 100644
--- a/src/models/mod.rs
+++ b/src/models/mod.rs
@@ -2,4 +2,4 @@ mod user;
 pub use user::User;
 
 mod challenge;
-pub use challenge::Challenge;
\ No newline at end of file
+pub use challenge::Challenge;
diff --git a/src/models/user/mod.rs b/src/models/user/mod.rs
index 778d614..4785a47 100644
--- a/src/models/user/mod.rs
+++ b/src/models/user/mod.rs
@@ -6,7 +6,7 @@ mod tests;
 use chrono::Utc;
 use derive_more::From;
 use reqwest::StatusCode;
-use rocket::http::{CookieJar, Cookie};
+use rocket::http::{Cookie, CookieJar};
 use serial::*;
 
 use serde::Deserialize;
@@ -113,4 +113,4 @@ pub enum GetUserError {
 
 fn parse_cookie_value<T: std::str::FromStr>(cookies: &CookieJar<'_>, name: &str) -> Option<T> {
     cookies.get_private(name)?.value().parse().ok()
-}
\ No newline at end of file
+}
diff --git a/src/models/user/serial.rs b/src/models/user/serial.rs
index 582fd4d..466c6d9 100644
--- a/src/models/user/serial.rs
+++ b/src/models/user/serial.rs
@@ -1,4 +1,4 @@
-use serde::{Serialize, Serializer, ser::SerializeStruct};
+use serde::{ser::SerializeStruct, Serialize, Serializer};
 
 use super::User;
 
@@ -31,4 +31,4 @@ impl Serialize for User {
         state.serialize_field("username", &self.username())?;
         state.end()
     }
-}
\ No newline at end of file
+}
diff --git a/src/models/user/tests.rs b/src/models/user/tests.rs
index ded0108..96f3db6 100644
--- a/src/models/user/tests.rs
+++ b/src/models/user/tests.rs
@@ -18,4 +18,4 @@ fn test_legacy_username() {
 fn test_new_username() {
     let user = test_user("test", 0);
     assert_eq!(user.username(), "test");
-}
\ No newline at end of file
+}
diff --git a/src/prelude.rs b/src/prelude.rs
index f3eebf3..df05737 100644
--- a/src/prelude.rs
+++ b/src/prelude.rs
@@ -1 +1 @@
-pub use crate::utils::Kyujitai;
\ No newline at end of file
+pub use crate::utils::Kyujitai;
diff --git a/src/routes/get_challenge.rs b/src/routes/get_challenge.rs
index 8779a1f..4d10b69 100644
--- a/src/routes/get_challenge.rs
+++ b/src/routes/get_challenge.rs
@@ -1,7 +1,7 @@
 use rocket::http::CookieJar;
-use rocket_dyn_templates::{Template, context};
+use rocket_dyn_templates::{context, Template};
 
-use crate::models::{User, Challenge};
+use crate::models::{Challenge, User};
 
 #[get("/<challenge>")]
 pub async fn get_challenge(challenge: u32, cookies: &CookieJar<'_>) -> Template {
@@ -19,4 +19,4 @@ pub async fn get_challenge(challenge: u32, cookies: &CookieJar<'_>) -> Template
             content: Challenge::get(challenge),
         },
     )
-}
\ No newline at end of file
+}
diff --git a/src/routes/login.rs b/src/routes/login.rs
index ca76c73..910de68 100644
--- a/src/routes/login.rs
+++ b/src/routes/login.rs
@@ -10,4 +10,4 @@ pub fn login() -> Redirect {
         client_id = env::var("CLIENT_ID").unwrap(),
         redirect_uri = format!("{}success", env::var("DOMAIN").unwrap()),
     ))
-}
\ No newline at end of file
+}
diff --git a/src/routes/logout.rs b/src/routes/logout.rs
index df5051f..1b46de4 100644
--- a/src/routes/logout.rs
+++ b/src/routes/logout.rs
@@ -2,7 +2,7 @@ use std::{collections::HashMap, env};
 
 use rocket::{http::CookieJar, response::Redirect};
 
-use crate::{utils::Referer, cookies::token::TOKEN_COOKIE, models::User};
+use crate::{cookies::token::TOKEN_COOKIE, models::User, utils::Referer};
 
 #[get("/logout")]
 pub fn logout(cookies: &CookieJar<'_>, referer: Referer) -> Redirect {
@@ -33,4 +33,4 @@ pub fn logout(cookies: &CookieJar<'_>, referer: Referer) -> Redirect {
     User::purge(cookies);
     let redirect_url = referer.0.unwrap_or("/".to_owned());
     Redirect::to(redirect_url)
-}
\ No newline at end of file
+}
diff --git a/src/routes/mod.rs b/src/routes/mod.rs
index a8f5bf3..b2e2e50 100644
--- a/src/routes/mod.rs
+++ b/src/routes/mod.rs
@@ -20,4 +20,4 @@ pub use _success::success;
 
 #[path = "testing.rs"]
 mod _testing;
-pub use _testing::testing;
\ No newline at end of file
+pub use _testing::testing;
diff --git a/src/routes/post_login.rs b/src/routes/post_login.rs
index 1ce1ac6..7be5462 100644
--- a/src/routes/post_login.rs
+++ b/src/routes/post_login.rs
@@ -1,5 +1,9 @@
-use chrono::{Utc, Duration};
-use rocket::{form::Form, http::{CookieJar, Cookie}, response::Redirect};
+use chrono::{Duration, Utc};
+use rocket::{
+    form::Form,
+    http::{Cookie, CookieJar},
+    response::Redirect,
+};
 
 use crate::{cookies::token::TOKEN_EXPIRE_COOKIE, models::User};
 
@@ -24,4 +28,4 @@ pub async fn post_login(login: Form<Login<'_>>, cookies: &CookieJar<'_>) -> Redi
         ));
     }
     Redirect::to("/")
-}
\ No newline at end of file
+}
diff --git a/src/routes/success.rs b/src/routes/success.rs
index 4f6e6fd..9c7e319 100644
--- a/src/routes/success.rs
+++ b/src/routes/success.rs
@@ -21,4 +21,4 @@ pub fn success() -> RawHtml<&'static str> {
     }
 </script>",
     )
-}
\ No newline at end of file
+}
diff --git a/src/routes/testing.rs b/src/routes/testing.rs
index 2deec8c..e62bbfc 100644
--- a/src/routes/testing.rs
+++ b/src/routes/testing.rs
@@ -8,13 +8,21 @@ use crate::models::User;
 #[get("/testing")]
 pub async fn testing(cookies: &CookieJar<'_>, http: &State<Http>) -> String {
     // Get logged in user's join date in 字ちゃん server
-    format!("{:?}", http.get_guild(814700630958276649).await
-        .expect("Failed to get testing guild")
-        .member(http.deref(), User::get(cookies).await
-            .expect("Failed to get logged in user data")
-            .expect("No logged in user")
-            .id
-        ).await
-        .expect("Failed to fetch user in server")
-        .joined_at)
-}
\ No newline at end of file
+    format!(
+        "{:?}",
+        http.get_guild(814700630958276649)
+            .await
+            .expect("Failed to get testing guild")
+            .member(
+                http.deref(),
+                User::get(cookies)
+                    .await
+                    .expect("Failed to get logged in user data")
+                    .expect("No logged in user")
+                    .id
+            )
+            .await
+            .expect("Failed to fetch user in server")
+            .joined_at
+    )
+}
diff --git a/src/utils/referer.rs b/src/utils/referer.rs
index 8ce04a4..60c9cf1 100644
--- a/src/utils/referer.rs
+++ b/src/utils/referer.rs
@@ -1,6 +1,9 @@
 use std::convert::Infallible;
 
-use rocket::{request::{FromRequest, self}, Request};
+use rocket::{
+    request::{self, FromRequest},
+    Request,
+};
 
 pub struct Referer(pub Option<String>);
 
@@ -12,4 +15,4 @@ impl<'r> FromRequest<'r> for Referer {
         let referer = req.headers().get_one("Referer");
         request::Outcome::Success(Referer(referer.map(|referer| referer.to_owned())))
     }
-}
\ No newline at end of file
+}