diff --git a/src/backend/common.rs b/src/backend/common.rs
index 0d7091e..d171c74 100644
--- a/src/backend/common.rs
+++ b/src/backend/common.rs
@@ -57,20 +57,20 @@ where
             crate::overlays::screen::get_screens_x11(&app.session)?
         };
 
-        let mut watch = create_watch::<T>(&app, &screens)?;
+        let mut watch = create_watch::<T>(app, &screens)?;
         watch.state.want_visible = true;
         overlays.insert(watch.state.id, watch);
 
-        let mut keyboard = create_keyboard(&app)?;
+        let mut keyboard = create_keyboard(app)?;
         keyboard.state.show_hide = true;
         keyboard.state.want_visible = false;
         overlays.insert(keyboard.state.id, keyboard);
 
         let mut show_screens = app.session.config.show_screens.clone();
         if show_screens.is_empty() {
-            screens.first().and_then(|s| {
+            screens.first().map(|s| {
                 show_screens.push(s.state.name.clone());
-                Some(())
+                
             });
         }
 
@@ -102,17 +102,17 @@ where
                     .iter()
                     .find(|(_, o)| *o.state.name == **name)
                     .map(|(id, _)| *id);
-                id.and_then(|id| self.overlays.remove(&id));
+                id.and_then(|id| self.overlays.remove(id));
             }
         };
     }
 
-    pub fn get_by_id<'a>(&'a mut self, id: usize) -> Option<&'a OverlayData<T>> {
-        self.overlays.get(&id)
+    pub fn get_by_id(&mut self, id: usize) -> Option<&OverlayData<T>> {
+        self.overlays.get(id)
     }
 
-    pub fn mut_by_id<'a>(&'a mut self, id: usize) -> Option<&'a mut OverlayData<T>> {
-        self.overlays.get_mut(&id)
+    pub fn mut_by_id(&mut self, id: usize) -> Option<&mut OverlayData<T>> {
+        self.overlays.get_mut(id)
     }
 
     pub fn get_by_name<'a>(&'a mut self, name: &str) -> Option<&'a OverlayData<T>> {
@@ -123,11 +123,11 @@ where
         self.overlays.values_mut().find(|o| *o.state.name == *name)
     }
 
-    pub fn iter<'a>(&'a self) -> impl Iterator<Item = &'a OverlayData<T>> {
+    pub fn iter(&self) -> impl Iterator<Item = &'_ OverlayData<T>> {
         self.overlays.values()
     }
 
-    pub fn iter_mut<'a>(&'a mut self) -> impl Iterator<Item = &'a mut OverlayData<T>> {
+    pub fn iter_mut(&mut self) -> impl Iterator<Item = &'_ mut OverlayData<T>> {
         self.overlays.values_mut()
     }
 
diff --git a/src/backend/openvr/input.rs b/src/backend/openvr/input.rs
index c0f3b33..07f33be 100644
--- a/src/backend/openvr/input.rs
+++ b/src/backend/openvr/input.rs
@@ -128,15 +128,13 @@ impl OpenVrInputSource {
         system: &mut SystemManager,
         app: &mut AppState,
     ) {
-        let aas = ActiveActionSet {
-            0: ovr_overlay::sys::VRActiveActionSet_t {
+        let aas = ActiveActionSet(ovr_overlay::sys::VRActiveActionSet_t {
                 ulActionSet: self.set_hnd.0,
                 ulRestrictedToDevice: 0,
                 ulSecondaryActionSet: 0,
                 unPadding: 0,
                 nPriority: 0,
-            },
-        };
+            });
 
         let _ = input.update_actions(&mut [aas]);
 
@@ -155,10 +153,10 @@ impl OpenVrInputSource {
                     0.005,
                     INPUT_ANY,
                 )
-                .and_then(|pose| {
+                .map(|pose| {
                     app_hand.pose = pose.0.pose.mDeviceToAbsoluteTracking.to_affine();
                     hand.has_pose = true;
-                    Ok(())
+                    
                 });
 
             app_hand.now.click = input
@@ -237,9 +235,9 @@ impl OpenVrInputSource {
                 _ => continue,
             };
 
-            get_tracked_device(system, device, role).and_then(|device| {
+            get_tracked_device(system, device, role).map(|device| {
                 app.input_state.devices.push(device);
-                Some(())
+                
             });
         }
 
diff --git a/src/backend/openvr/lines.rs b/src/backend/openvr/lines.rs
index a6e3193..3de2145 100644
--- a/src/backend/openvr/lines.rs
+++ b/src/backend/openvr/lines.rs
@@ -95,7 +95,7 @@ impl LinePool {
     ) {
         let rotation = Affine3A::from_axis_angle(Vec3::X, -PI * 0.5);
 
-        from.translation = from.translation + from.transform_vector3a(Vec3A::NEG_Z) * (len * 0.5);
+        from.translation += from.transform_vector3a(Vec3A::NEG_Z) * (len * 0.5);
         let mut transform = from * rotation * Affine3A::from_scale(Vec3::new(1., len / 0.002, 1.));
 
         let to_hmd = hmd.translation - from.translation;
@@ -114,7 +114,7 @@ impl LinePool {
             }
         }
 
-        transform = transform * rotations[closest.0];
+        transform *= rotations[closest.0];
 
         debug_assert!(color < self.colors.len());
 
diff --git a/src/backend/openxr/input.rs b/src/backend/openxr/input.rs
index e11fab6..5c9fe50 100644
--- a/src/backend/openxr/input.rs
+++ b/src/backend/openxr/input.rs
@@ -73,8 +73,8 @@ impl OpenXrInputSource {
         Ok(Self {
             action_set,
             hands: [
-                OpenXrHand::new(&xr, left_source)?,
-                OpenXrHand::new(&xr, right_source)?,
+                OpenXrHand::new(xr, left_source)?,
+                OpenXrHand::new(xr, right_source)?,
             ],
         })
     }
diff --git a/src/backend/openxr/lines.rs b/src/backend/openxr/lines.rs
index c1d4f51..5d8da01 100644
--- a/src/backend/openxr/lines.rs
+++ b/src/backend/openxr/lines.rs
@@ -94,14 +94,14 @@ impl LinePool {
 
         debug_assert!(color < self.colors.len());
 
-        let Some(line) = self.lines.get_mut(&id) else {
+        let Some(line) = self.lines.get_mut(id) else {
             log::warn!("Line {} not found", id);
             return;
         };
 
         let rotation = Affine3A::from_axis_angle(Vec3::X, PI * 1.5);
 
-        from.translation = from.translation + from.transform_vector3a(Vec3A::NEG_Z) * (len * 0.5);
+        from.translation += from.transform_vector3a(Vec3A::NEG_Z) * (len * 0.5);
         let mut transform = from * rotation;
 
         let to_hmd = hmd.translation - from.translation;
@@ -120,7 +120,7 @@ impl LinePool {
             }
         }
 
-        transform = transform * rotations[closest.0];
+        transform *= rotations[closest.0];
 
         let posef = helpers::transform_to_posef(&transform);
 
diff --git a/src/backend/openxr/mod.rs b/src/backend/openxr/mod.rs
index a4418e2..43c02cf 100644
--- a/src/backend/openxr/mod.rs
+++ b/src/backend/openxr/mod.rs
@@ -221,11 +221,8 @@ pub fn openxr_run(running: Arc<AtomicBool>) -> Result<(), BackendError> {
             .input_state
             .pointers
             .iter()
-            .any(|p| p.now.show_hide && !p.before.show_hide)
-        {
-            if show_hide_counter.click() {
-                overlays.show_hide(&mut app_state);
-            }
+            .any(|p| p.now.show_hide && !p.before.show_hide) && show_hide_counter.click() {
+            overlays.show_hide(&mut app_state);
         }
 
         watch_fade(&mut app_state, overlays.mut_by_id(watch_id).unwrap()); // want panic
diff --git a/src/graphics.rs b/src/graphics.rs
index 3a57494..654c5a6 100644
--- a/src/graphics.rs
+++ b/src/graphics.rs
@@ -153,7 +153,6 @@ impl WlxGraphics {
         instance_extensions.khr_get_physical_device_properties2 = true;
 
         let instance_extensions_raw = instance_extensions
-            .clone()
             .into_iter()
             .filter_map(|(name, enabled)| {
                 if enabled {
@@ -241,7 +240,6 @@ impl WlxGraphics {
         };
 
         let device_extensions_raw = device_extensions
-            .clone()
             .into_iter()
             .filter_map(|(name, enabled)| {
                 if enabled {
@@ -590,7 +588,6 @@ impl WlxGraphics {
         let format = fourcc_to_vk(frame.format.fourcc)?;
 
         let layouts: Vec<SubresourceLayout> = (0..frame.num_planes)
-            .into_iter()
             .map(|i| {
                 let plane = &frame.planes[i];
                 SubresourceLayout {
diff --git a/src/gui/font.rs b/src/gui/font.rs
index 5d10f73..f1d561b 100644
--- a/src/gui/font.rs
+++ b/src/gui/font.rs
@@ -188,7 +188,7 @@ impl FontCache {
 
         let bmp = glyph.bitmap();
         let buf = bmp.buffer().to_vec();
-        if buf.len() == 0 {
+        if buf.is_empty() {
             return Ok(font.glyphs[0].clone());
         }
 
diff --git a/src/overlays/keyboard.rs b/src/overlays/keyboard.rs
index 79ae6ee..b7d9870 100644
--- a/src/overlays/keyboard.rs
+++ b/src/overlays/keyboard.rs
@@ -145,7 +145,7 @@ fn key_press(
             data.key_click(&app.session);
 
             if let PointerMode::Right = mode {
-                data.modifiers = data.modifiers | SHIFT;
+                data.modifiers |= SHIFT;
                 app.hid_provider.set_modifiers(data.modifiers);
             }
 
diff --git a/src/overlays/mirror.rs b/src/overlays/mirror.rs
index a3f50ef..094161b 100644
--- a/src/overlays/mirror.rs
+++ b/src/overlays/mirror.rs
@@ -82,7 +82,7 @@ impl OverlayRenderer for MirrorRenderer {
             if let Some(view) = renderer.view() {
                 let extent = view.image().extent();
                 if self.last_extent != extent {
-                    self.last_extent = extent.clone();
+                    self.last_extent = extent;
                     // resized
                     app.tasks.enqueue(TaskType::Overlay(
                         OverlaySelector::Name(self.name.clone()),
diff --git a/src/overlays/screen.rs b/src/overlays/screen.rs
index d9821b9..1e22494 100644
--- a/src/overlays/screen.rs
+++ b/src/overlays/screen.rs
@@ -356,7 +356,7 @@ impl OverlayRenderer for ScreenRenderer {
                 }
             });
 
-            self.capture.init(&drm_formats);
+            self.capture.init(drm_formats);
             self.capture.request_new_frame();
         };
 
@@ -407,7 +407,7 @@ impl OverlayRenderer for ScreenRenderer {
                     let data = unsafe { slice::from_raw_parts(map, len) };
 
                     let image =
-                        upload.texture2d(frame.format.width, frame.format.height, format, &data)?;
+                        upload.texture2d(frame.format.width, frame.format.height, format, data)?;
                     upload.build_and_execute_now()?;
 
                     unsafe { libc::munmap(map as *mut _, len) };
@@ -426,7 +426,7 @@ impl OverlayRenderer for ScreenRenderer {
                     let data = unsafe { slice::from_raw_parts(frame.ptr as *const u8, frame.size) };
 
                     let image =
-                        upload.texture2d(frame.format.width, frame.format.height, format, &data)?;
+                        upload.texture2d(frame.format.width, frame.format.height, format, data)?;
 
                     let mut pipeline = None;
                     if frame.mouse.is_some() {
diff --git a/src/overlays/watch.rs b/src/overlays/watch.rs
index 31f6470..a1a33ad 100644
--- a/src/overlays/watch.rs
+++ b/src/overlays/watch.rs
@@ -80,14 +80,11 @@ where
                 canvas.font_size = font_size;
                 canvas.fg_color = color_parse(&fg_color).unwrap_or(FALLBACK_COLOR);
 
-                let tz: Option<Tz> = match timezone {
-                    Some(tz) => Some(tz.parse().unwrap_or_else(|_| {
+                let tz: Option<Tz> = timezone.map(|tz| tz.parse().unwrap_or_else(|_| {
                         log::error!("Failed to parse timezone '{}'", &tz);
                         canvas.fg_color = FALLBACK_COLOR;
                         Tz::UTC
-                    })),
-                    None => None,
-                };
+                    }));
 
                 let label = canvas.label(x, y, w, h, empty_str.clone());
                 label.state = Some(ElemState::Clock {