diff --git a/crates/core/database/src/models/users/model.rs b/crates/core/database/src/models/users/model.rs
index 9bf57405..c70e0839 100644
--- a/crates/core/database/src/models/users/model.rs
+++ b/crates/core/database/src/models/users/model.rs
@@ -111,6 +111,7 @@ auto_derived!(
 
 impl User {
     /// Check whether a username is already in use by another user
+    #[allow(dead_code)]
     async fn is_username_taken(db: &Database, username: &str) -> Result<bool> {
         match db.fetch_user_by_username(username).await {
             Ok(_) => Ok(true),
diff --git a/crates/core/database/src/util/permissions.rs b/crates/core/database/src/util/permissions.rs
index 80b02e03..c4e0d695 100644
--- a/crates/core/database/src/util/permissions.rs
+++ b/crates/core/database/src/util/permissions.rs
@@ -8,6 +8,7 @@ use crate::{Database, User};
 
 /// Permissions calculator
 pub struct PermissionCalculator<'a> {
+    #[allow(dead_code)]
     database: &'a Database,
 
     perspective: &'a User,
diff --git a/crates/delta/src/routes/safety/report_content.rs b/crates/delta/src/routes/safety/report_content.rs
index ffce8650..2856d225 100644
--- a/crates/delta/src/routes/safety/report_content.rs
+++ b/crates/delta/src/routes/safety/report_content.rs
@@ -57,7 +57,7 @@ pub async fn report_content(db: &Db, user: User, data: Json<DataReportContent>)
                 return Err(Error::CannotReportYourself);
             }
 
-            let (snapshot, files) = SnapshotContent::generate_from_server(db, server)?;
+            let (snapshot, files) = SnapshotContent::generate_from_server(server)?;
             (vec![snapshot], files)
         }
         ReportedContent::User { id, message_id, .. } => {
@@ -75,7 +75,7 @@ pub async fn report_content(db: &Db, user: User, data: Json<DataReportContent>)
                 None
             };
 
-            let (snapshot, files) = SnapshotContent::generate_from_user(db, reported_user)?;
+            let (snapshot, files) = SnapshotContent::generate_from_user(reported_user)?;
 
             if let Some(message) = message {
                 let (message_snapshot, message_files) =
diff --git a/crates/quark/src/impl/generic/safety/snapshot.rs b/crates/quark/src/impl/generic/safety/snapshot.rs
index 73ce36c7..b5e372a9 100644
--- a/crates/quark/src/impl/generic/safety/snapshot.rs
+++ b/crates/quark/src/impl/generic/safety/snapshot.rs
@@ -61,10 +61,7 @@ impl SnapshotContent {
         ))
     }
 
-    pub fn generate_from_server(
-        db: &Database,
-        server: Server,
-    ) -> Result<(SnapshotContent, Vec<String>)> {
+    pub fn generate_from_server(server: Server) -> Result<(SnapshotContent, Vec<String>)> {
         // Collect server's icon and banner
         let files = [&server.icon, &server.banner]
             .iter()
@@ -74,7 +71,7 @@ impl SnapshotContent {
         Ok((SnapshotContent::Server(server), files))
     }
 
-    pub fn generate_from_user(db: &Database, user: User) -> Result<(SnapshotContent, Vec<String>)> {
+    pub fn generate_from_user(user: User) -> Result<(SnapshotContent, Vec<String>)> {
         // Collect user's avatar and profile background
         let files = [
             user.avatar.as_ref(),
diff --git a/crates/quark/src/tasks/ack.rs b/crates/quark/src/tasks/ack.rs
index 25cf6e2b..6bca0886 100644
--- a/crates/quark/src/tasks/ack.rs
+++ b/crates/quark/src/tasks/ack.rs
@@ -2,8 +2,8 @@
 use crate::Database;
 
 use deadqueue::limited::Queue;
-use std::{collections::HashMap, time::Duration};
 use once_cell::sync::Lazy;
+use std::{collections::HashMap, time::Duration};
 
 use super::DelayedTask;
 
@@ -95,7 +95,7 @@ pub async fn worker(db: Database) {
         }) = Q.try_pop()
         {
             let key = (user, channel);
-            if let Some(mut task) = tasks.get_mut(&key) {
+            if let Some(task) = tasks.get_mut(&key) {
                 task.delay();
 
                 match &mut event {
diff --git a/crates/quark/src/tasks/last_message_id.rs b/crates/quark/src/tasks/last_message_id.rs
index 976a725d..acc3cbc4 100644
--- a/crates/quark/src/tasks/last_message_id.rs
+++ b/crates/quark/src/tasks/last_message_id.rs
@@ -2,8 +2,8 @@
 use crate::{models::channel::PartialChannel, Database};
 
 use deadqueue::limited::Queue;
-use std::{collections::HashMap, time::Duration};
 use once_cell::sync::Lazy;
+use std::{collections::HashMap, time::Duration};
 
 use super::DelayedTask;
 
@@ -73,7 +73,7 @@ pub async fn worker(db: Database) {
 
         // Queue incoming tasks.
         while let Some(Data { channel, id, is_dm }) = Q.try_pop() {
-            if let Some(mut task) = tasks.get_mut(&channel) {
+            if let Some(task) = tasks.get_mut(&channel) {
                 task.data.id = id;
                 task.delay();
             } else {