diff --git a/db/src/models/event_for_calendar.rs b/db/src/models/event_for_calendar.rs
index aa5123b4..ded2b04f 100644
--- a/db/src/models/event_for_calendar.rs
+++ b/db/src/models/event_for_calendar.rs
@@ -58,12 +58,12 @@ impl EventForCalendar {
                 assignments: record
                     .assignments
                     .as_ref()
-                    .and_then(|f| Some(f.to_vec()))
+                    .map(|f| f.to_vec())
                     .unwrap_or_default(),
                 vehicle_assignments: record
                     .vehicles
                     .as_ref()
-                    .and_then(|f| Some(f.to_vec()))
+                    .map(|f| f.to_vec())
                     .unwrap_or_default(),
             })
             .collect();
diff --git a/web/src/endpoints/availability/put_cross_areal.rs b/web/src/endpoints/availability/put_cross_areal.rs
index 747b9a76..9a6f3cc6 100644
--- a/web/src/endpoints/availability/put_cross_areal.rs
+++ b/web/src/endpoints/availability/put_cross_areal.rs
@@ -64,7 +64,7 @@ async fn handle_cross_areal(
     let assignments_for_availability =
         Assignment::read_all_by_availability(pool.get_ref(), availability.id).await?;
 
-    if !cross_areal && assignments_for_availability.len() != 0 {
+    if !cross_areal && !assignments_for_availability.is_empty() {
         let trigger = json!({
             "showToast": {
                 "type": "danger",
diff --git a/web/src/mail/notify_planned.rs b/web/src/mail/notify_planned.rs
index a93f3bf4..2999ddba 100644
--- a/web/src/mail/notify_planned.rs
+++ b/web/src/mail/notify_planned.rs
@@ -25,7 +25,7 @@ impl Mailer {
             &self.hostname,
             &user.name,
             &user.email,
-            &assigned_function,
+            assigned_function,
             event,
         )?;
         self.transport.send(message).await?;
diff --git a/web/src/mail/notify_unplanned.rs b/web/src/mail/notify_unplanned.rs
index 4cc6eba1..ce71c9ea 100644
--- a/web/src/mail/notify_unplanned.rs
+++ b/web/src/mail/notify_unplanned.rs
@@ -25,7 +25,7 @@ impl Mailer {
             &self.hostname,
             &user.name,
             &user.email,
-            &assigned_function,
+            assigned_function,
             event,
         )?;
         self.transport.send(message).await?;
diff --git a/web/src/utils/password_change/builder.rs b/web/src/utils/password_change/builder.rs
index 84c57171..a101e290 100644
--- a/web/src/utils/password_change/builder.rs
+++ b/web/src/utils/password_change/builder.rs
@@ -49,7 +49,7 @@ where
         self
     }
 
-    pub fn build<'a>(&'a mut self) -> PasswordChange<'a, T> {
+    pub fn build(&mut self) -> PasswordChange<T> {
         PasswordChange {
             pool: self.pool,
             user_id: self.user_id,