diff --git a/src/auth/auth_extractor.rs b/src/auth/auth_extractor.rs
index df62c2d..40930db 100644
--- a/src/auth/auth_extractor.rs
+++ b/src/auth/auth_extractor.rs
@@ -23,7 +23,7 @@ impl FromRequestParts<DbPool> for AuthInfo {
     ) -> Result<Self, Self::Rejection> {
         let header = &parts.headers;
 
-        inspect_with_header(state, &header).await
+        inspect_with_header(state, header).await
     }
 }
 
diff --git a/src/auth/token.rs b/src/auth/token.rs
index 40db8ce..6fb4a67 100644
--- a/src/auth/token.rs
+++ b/src/auth/token.rs
@@ -1,14 +1,13 @@
 use crate::storage::DbPool;
-use axum::extract::{Path, Query, State};
+use axum::extract::State;
 use axum::http::StatusCode;
-use axum::response::{IntoResponse, NoContent, Response};
+use axum::response::{IntoResponse, Response};
 use axum::routing::post;
 use axum::{Json, Router};
 use log::error;
 use rand::{Rng, distributions::Alphanumeric};
 use serde::{Deserialize, Serialize};
 use sqlx::Error;
-use std::ops::Index;
 use uuid::Uuid;
 
 #[derive(Debug, Serialize)]
@@ -83,8 +82,8 @@ pub async fn create_root_token_if_none_exist(pool: &DbPool) -> bool {
     if result.is_err() {
         let error = result.err().unwrap();
         // Log the error and panic
-        error!("create_root_token failed: {:?}", error);
-        panic!("create_root_token failed: {:?}", error);
+        error!("create_root_token failed: {error:?}");
+        panic!("create_root_token failed: {error:?}");
     }
     // If successful, print the root token. This will only happen once.
     println!("\n\nYour root token is: {}", result.unwrap());
@@ -190,7 +189,7 @@ async fn post_lookup(
         }
         // If the token is not found, return a 404 Not Found error
         Err(e) => {
-            error!("Failed to retrieve token: {:?}", e);
+            error!("Failed to retrieve token: {e:?}");
             let err = ErrorResponse {
                 error: "Failed to retrieve token".to_string(),
             };
@@ -203,40 +202,79 @@ async fn post_lookup(
 // The following functions are placeholders for the various token-related operations.
 //
 
-async fn get_accessors() {}
 
-async fn post_create() {}
+async fn get_accessors() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn post_create_orphan() {}
+async fn post_create() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn post_create_role() {}
+async fn post_create_orphan() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn get_lookup() {}
+async fn post_create_role() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn get_lookup_self() {}
+async fn get_lookup() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn post_lookup_self() {}
+async fn get_lookup_self() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn post_renew() {}
+async fn post_lookup_self() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn post_renew_accessor() {}
+async fn post_renew() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn post_renew_self() {}
+async fn post_renew_accessor() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn post_revoke() {}
+async fn post_renew_self() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn post_revoke_accessor() {}
+async fn post_revoke() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn post_revoke_orphan() {}
+async fn post_revoke_accessor() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn post_revoke_self() {}
+async fn post_revoke_orphan() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn get_roles() {}
+async fn post_revoke_self() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn get_role_by_name() {}
+async fn get_roles() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn post_role_by_name() {}
+async fn get_role_by_name() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn delete_role_by_name() {}
+async fn post_role_by_name() -> &'static str {
+    todo!("not implemented")
+}
 
-async fn post_tidy() {}
+async fn delete_role_by_name() -> &'static str {
+    todo!("not implemented")
+}
+
+async fn post_tidy() -> &'static str {
+    todo!("not implemented")
+}
diff --git a/src/common.rs b/src/common.rs
index 928ad2c..13a1b1a 100644
--- a/src/common.rs
+++ b/src/common.rs
@@ -13,12 +13,12 @@ pub struct HttpError {
 }
 
 impl HttpError {
-    pub fn new(status_code: StatusCode, errors: Vec<String>) -> Response<Body> {
+    pub fn simple_with_status(status_code: StatusCode, errors: Vec<String>) -> Response<Body> {
         (status_code, Json(HttpError { errors })).into_response()
     }
 
     pub fn simple(status_code: StatusCode, error: impl ToString) -> Response<Body> {
-        HttpError::new(status_code, vec![error.to_string(); 1])
+        HttpError::simple_with_status(status_code, vec![error.to_string(); 1])
     }
 }
 
diff --git a/src/engines.rs b/src/engines.rs
index f767c7a..fcea8ba 100644
--- a/src/engines.rs
+++ b/src/engines.rs
@@ -42,7 +42,7 @@ async fn engine_handler(
     req: Request,
 ) -> Response<Body> {
     if let Some((mount_path, engine_type)) = map_mount_points(req.uri(), &engines.pool).await {
-        info!("Found mount point {} of type {}", mount_path, engine_type);
+        info!("Found mount point {mount_path} of type {engine_type}");
         // Match the engine type to the appropriate router
         match engine_type.as_str() {
             "kv_v2" => call_router(engines.kv_v2, mount_path, req).await,
@@ -72,7 +72,7 @@ async fn call_router(engine: Router, mount_path: String, mut req: Request) -> Re
 /// Occurs when the mount path is found in the database
 /// but the registered is unknown
 fn unknown_engine(engine_type: String) -> impl IntoResponse {
-    error!("Engine type {} not implemented", engine_type);
+    error!("Engine type {engine_type} not implemented");
     HttpError::simple(
         StatusCode::INTERNAL_SERVER_ERROR,
         format!("Engine type {engine_type} not implemented"),
diff --git a/src/engines/kv/data.rs b/src/engines/kv/data.rs
index 0e1c0c5..aca815e 100644
--- a/src/engines/kv/data.rs
+++ b/src/engines/kv/data.rs
@@ -234,7 +234,6 @@ pub async fn patch_data(
     Path(kv_path): Path<String>,
     Extension(EnginePath(engine_path)): Extension<EnginePath>,
     Json(secret): Json<KvV2WriteRequest>,
-) -> Result<Response, ()> {
-    // TODO: implement only application/merge-patch+json
-    todo!("Not implemented")
-}
+) -> &'static str {
+    todo!("not implemented")
+}
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index 3a23e6f..c27444d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,11 @@
 #![forbid(unsafe_code)]
 
-use crate::auth::auth_extractor::AuthInfo;
+// There are some placeholder functions, that will have to be implemented before the first release. 
+// They are marked with `todo!()` to indicate that they need to be implemented.
+// We want to keep these functions in the codebase. 
+// That is why we choose to suppress unused warnings for now.
+#![allow(unused)]
+
 use crate::common::HttpError;
 use axum::{
     extract::Request,
diff --git a/src/storage/sealing.rs b/src/storage/sealing.rs
index 8dc9580..c0f72fb 100644
--- a/src/storage/sealing.rs
+++ b/src/storage/sealing.rs
@@ -321,11 +321,11 @@ pub async fn init_default(pool: &DbPool) {
 
         #[cfg(feature = "shamir")]
         {
-            shamir::init_shamir(&pool, 2, 5).await
+            shamir::init_shamir(pool, 2, 5).await
         }
     };
 
-    let success = prepare_unseal(&pool).await;
+    let success = prepare_unseal(pool).await;
     warn!("New sealing password generated: {user_key:?}");
     assert!(
         success,
diff --git a/src/sys/sealing.rs b/src/sys/sealing.rs
index e634d11..386b811 100644
--- a/src/sys/sealing.rs
+++ b/src/sys/sealing.rs
@@ -47,4 +47,6 @@ async fn unseal_post(State(pool): State<DbPool>, Json(req): Json<UnsealRequest>)
     Ok(())
 }
 
-async fn seal_status_get(State(pool): State<DbPool>) {}
+async fn seal_status_get(State(pool): State<DbPool>) -> &'static str {
+    todo!("not implemented")
+}