diff --git a/server/src/adf.rs b/server/src/adf.rs
index 32180e7..cd2f3fb 100644
--- a/server/src/adf.rs
+++ b/server/src/adf.rs
@@ -44,9 +44,9 @@ pub(crate) struct AcAndGraph {
     pub(crate) graph: DoubleLabeledGraph,
 }
 
-impl Into<Bson> for AcAndGraph {
-    fn into(self) -> Bson {
-        to_bson(&self).expect("Serialization should work")
+impl From<AcAndGraph> for Bson {
+    fn from(source: AcAndGraph) -> Self {
+        to_bson(&source).expect("Serialization should work")
     }
 }
 
@@ -297,9 +297,7 @@ async fn add_adf_problem(
                 Parsing::Naive => Adf::from_parser(&parser),
                 Parsing::Hybrid => {
                     let bd_adf = BdAdf::from_parser(&parser);
-                    let naive_adf = bd_adf.hybrid_step_opt(false);
-
-                    naive_adf
+                    bd_adf.hybrid_step_opt(false)
                 }
             };
 
@@ -324,8 +322,7 @@ async fn add_adf_problem(
         Ok(Err(err)) => HttpResponse::InternalServerError().body(err.to_string()),
         Ok(Ok(Err(err))) => HttpResponse::InternalServerError().body(err.to_string()),
         Ok(Ok(Ok((adf, ac_and_graph)))) => {
-            let mut acs = AcsPerStrategy::default();
-            acs.parse_only = Some(vec![ac_and_graph]);
+            let acs = AcsPerStrategy { parse_only: Some(vec![ac_and_graph]), ..Default::default()};
 
             let adf_problem: AdfProblem = AdfProblem {
                 name: problem_name,
diff --git a/server/src/main.rs b/server/src/main.rs
index b2d1545..c513c90 100644
--- a/server/src/main.rs
+++ b/server/src/main.rs
@@ -40,7 +40,7 @@ async fn main() -> std::io::Result<()> {
     // cookie secret ket
     let secret_key = Key::generate();
 
-    let server = HttpServer::new(move || {
+    HttpServer::new(move || {
         let app = App::new();
 
         #[cfg(feature = "cors_for_local_development")]
@@ -89,7 +89,5 @@ async fn main() -> std::io::Result<()> {
     })
     .bind(("0.0.0.0", 8080))?
     .run()
-    .await;
-
-    server
+    .await
 }
diff --git a/server/src/user.rs b/server/src/user.rs
index 8371dc0..35d40ce 100644
--- a/server/src/user.rs
+++ b/server/src/user.rs
@@ -280,7 +280,7 @@ async fn update_user(
         Some(id) => match id.id() {
             Err(err) => HttpResponse::InternalServerError().body(err.to_string()),
             Ok(username) => {
-                if &user.username != &username && username_exists(&user_coll, &user.username).await
+                if user.username != username && username_exists(&user_coll, &user.username).await
                 {
                     return HttpResponse::Conflict()
                         .body("Username is already taken. Please pick another one!");