diff --git a/components/constellation/constellation.rs b/components/constellation/constellation.rs
index ef0676f643f..9005f11a8db 100644
--- a/components/constellation/constellation.rs
+++ b/components/constellation/constellation.rs
@@ -1059,7 +1059,6 @@ where
                 .map(|threads| threads.pipeline()),
             webxr_registry: self.webxr_registry.clone(),
             player_context: self.player_context.clone(),
-            event_loop_waker: None,
             user_agent: self.user_agent.clone(),
         });
 
diff --git a/components/constellation/pipeline.rs b/components/constellation/pipeline.rs
index b79609dc3a8..71ed997e11c 100644
--- a/components/constellation/pipeline.rs
+++ b/components/constellation/pipeline.rs
@@ -21,7 +21,6 @@ use canvas_traits::webgl::WebGLPipeline;
 use compositing_traits::{CompositionPipeline, CompositorMsg, CompositorProxy};
 use crossbeam_channel::{unbounded, Sender};
 use devtools_traits::{DevtoolsControlMsg, ScriptToDevtoolsControlMsg};
-use embedder_traits::EventLoopWaker;
 use fonts::FontCacheThread;
 use ipc_channel::ipc::{self, IpcReceiver, IpcSender};
 use ipc_channel::router::ROUTER;
@@ -202,9 +201,6 @@ pub struct InitialPipelineState {
     /// Application window's GL Context for Media player
     pub player_context: WindowGLContext,
 
-    /// Mechanism to force the compositor to process events.
-    pub event_loop_waker: Option<Box<dyn EventLoopWaker>>,
-
     /// User agent string to report in network requests.
     pub user_agent: Cow<'static, str>,
 }
diff --git a/components/devtools/actors/object.rs b/components/devtools/actors/object.rs
index 5a7f9c581bd..909871564cf 100644
--- a/components/devtools/actors/object.rs
+++ b/components/devtools/actors/object.rs
@@ -11,7 +11,7 @@ use crate::StreamId;
 
 pub struct ObjectActor {
     pub name: String,
-    pub uuid: String,
+    pub _uuid: String,
 }
 
 impl Actor for ObjectActor {
@@ -37,7 +37,7 @@ impl ObjectActor {
             let name = registry.new_name("object");
             let actor = ObjectActor {
                 name: name.clone(),
-                uuid: uuid.clone(),
+                _uuid: uuid.clone(),
             };
 
             registry.register_script_actor(uuid, name.clone());
diff --git a/components/layout/block.rs b/components/layout/block.rs
index 59b584a4328..cbfa80798e0 100644
--- a/components/layout/block.rs
+++ b/components/layout/block.rs
@@ -2675,7 +2675,6 @@ pub struct ISizeConstraintInput {
     pub inline_end_margin: MaybeAuto,
     pub inline_start: MaybeAuto,
     pub inline_end: MaybeAuto,
-    pub text_align: TextAlign,
     pub available_inline_size: Au,
 }
 
@@ -2686,7 +2685,6 @@ impl ISizeConstraintInput {
         inline_end_margin: MaybeAuto,
         inline_start: MaybeAuto,
         inline_end: MaybeAuto,
-        text_align: TextAlign,
         available_inline_size: Au,
     ) -> ISizeConstraintInput {
         ISizeConstraintInput {
@@ -2695,7 +2693,6 @@ impl ISizeConstraintInput {
             inline_end_margin,
             inline_start,
             inline_end,
-            text_align,
             available_inline_size,
         }
     }
@@ -2793,7 +2790,6 @@ pub trait ISizeAndMarginsComputer {
             MaybeAuto::from_style(margin.inline_end, containing_block_inline_size),
             MaybeAuto::from_style(position.inline_start, containing_block_inline_size),
             MaybeAuto::from_style(position.inline_end, containing_block_inline_size),
-            style.get_inherited_text().text_align,
             available_inline_size,
         )
     }
diff --git a/components/layout/display_list/background.rs b/components/layout/display_list/background.rs
index 339f527b042..b0274665344 100644
--- a/components/layout/display_list/background.rs
+++ b/components/layout/display_list/background.rs
@@ -31,8 +31,6 @@ pub struct BackgroundPlacement {
     pub clip_rect: Rect<Au>,
     /// Rounded corners for the clip_rect.
     pub clip_radii: BorderRadius,
-    /// Whether or not the background is fixed to the viewport.
-    pub fixed: bool,
 }
 
 /// Access element at index modulo the array length.
@@ -170,17 +168,13 @@ pub fn placement(
         border_radii,
     );
 
-    let mut fixed = false;
     let mut bounds = match bg_attachment {
         BackgroundAttachment::Scroll => match bg_origin {
             BackgroundOrigin::BorderBox => absolute_bounds,
             BackgroundOrigin::PaddingBox => absolute_bounds.inner_rect(border),
             BackgroundOrigin::ContentBox => absolute_bounds.inner_rect(border_padding),
         },
-        BackgroundAttachment::Fixed => {
-            fixed = true;
-            Rect::new(Point2D::origin(), viewport_size)
-        },
+        BackgroundAttachment::Fixed => Rect::new(Point2D::origin(), viewport_size),
     };
 
     let mut tile_size = compute_background_image_size(bg_size, bounds.size, intrinsic_size);
@@ -223,7 +217,6 @@ pub fn placement(
         tile_spacing,
         clip_rect,
         clip_radii,
-        fixed,
     })
 }
 
diff --git a/components/net/decoder.rs b/components/net/decoder.rs
index 8f11d60eb0d..7d72ee3d8b4 100644
--- a/components/net/decoder.rs
+++ b/components/net/decoder.rs
@@ -45,6 +45,7 @@ use libflate::non_blocking::gzip;
 use crate::connector::BUF_SIZE;
 
 #[derive(Debug)]
+#[allow(dead_code)]
 pub enum Error {
     Io(io::Error),
     Hyper(hyper::Error),
diff --git a/components/script/dom/bindings/interface.rs b/components/script/dom/bindings/interface.rs
index d1ef808f8f5..1986b08b052 100644
--- a/components/script/dom/bindings/interface.rs
+++ b/components/script/dom/bindings/interface.rs
@@ -49,11 +49,11 @@ use crate::script_runtime::JSContext as SafeJSContext;
 #[derive(Clone, Copy)]
 pub struct NonCallbackInterfaceObjectClass {
     /// The SpiderMonkey class structure.
-    pub class: JSClass,
+    pub _class: JSClass,
     /// The prototype id of that interface, used in the hasInstance hook.
-    pub proto_id: PrototypeList::ID,
+    pub _proto_id: PrototypeList::ID,
     /// The prototype depth of that interface, used in the hasInstance hook.
-    pub proto_depth: u16,
+    pub _proto_depth: u16,
     /// The string representation of the object.
     pub representation: &'static [u8],
 }
@@ -69,7 +69,7 @@ impl NonCallbackInterfaceObjectClass {
         proto_depth: u16,
     ) -> NonCallbackInterfaceObjectClass {
         NonCallbackInterfaceObjectClass {
-            class: JSClass {
+            _class: JSClass {
                 name: c"Function".as_ptr(),
                 flags: 0,
                 cOps: &constructor_behavior.0,
@@ -77,8 +77,8 @@ impl NonCallbackInterfaceObjectClass {
                 ext: 0 as *const _,
                 oOps: &OBJECT_OPS,
             },
-            proto_id,
-            proto_depth,
+            _proto_id: proto_id,
+            _proto_depth: proto_depth,
             representation: string_rep,
         }
     }
diff --git a/components/script/dom/iirfilternode.rs b/components/script/dom/iirfilternode.rs
index f93b9c1b6dc..8eb07f34532 100644
--- a/components/script/dom/iirfilternode.rs
+++ b/components/script/dom/iirfilternode.rs
@@ -36,7 +36,7 @@ pub struct IIRFilterNode {
 impl IIRFilterNode {
     #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
-        window: &Window,
+        _window: &Window,
         context: &BaseAudioContext,
         options: &IIRFilterOptions,
     ) -> Fallible<IIRFilterNode> {
diff --git a/components/script/dom/mediaquerylist.rs b/components/script/dom/mediaquerylist.rs
index 16675e1ed98..ca675586578 100644
--- a/components/script/dom/mediaquerylist.rs
+++ b/components/script/dom/mediaquerylist.rs
@@ -22,8 +22,8 @@ use crate::dom::document::Document;
 use crate::dom::eventtarget::EventTarget;
 
 pub enum MediaQueryListMatchState {
-    Same(bool),
-    Changed(bool),
+    Same,
+    Changed,
 }
 
 #[dom_struct]
@@ -59,12 +59,12 @@ impl MediaQueryList {
 
         let result = if let Some(old_matches) = self.last_match_state.get() {
             if old_matches == matches {
-                MediaQueryListMatchState::Same(matches)
+                MediaQueryListMatchState::Same
             } else {
-                MediaQueryListMatchState::Changed(matches)
+                MediaQueryListMatchState::Changed
             }
         } else {
-            MediaQueryListMatchState::Changed(matches)
+            MediaQueryListMatchState::Changed
         };
 
         self.last_match_state.set(Some(matches));
diff --git a/components/script/dom/webgl_validations/tex_image_2d.rs b/components/script/dom/webgl_validations/tex_image_2d.rs
index 96afb62820e..ecd0a167ce6 100644
--- a/components/script/dom/webgl_validations/tex_image_2d.rs
+++ b/components/script/dom/webgl_validations/tex_image_2d.rs
@@ -59,8 +59,8 @@ impl fmt::Display for TexImageValidationError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         use self::TexImageValidationError::*;
         let description = match *self {
-            InvalidTextureTarget(_) => "Invalid texture target",
-            TextureTargetNotBound(_) => "Texture was not bound",
+            InvalidTextureTarget(texture_id) => &format!("Invalid texture target ({texture_id})"),
+            TextureTargetNotBound(texture_id) => &format!("Texture was not bound {texture_id}"),
             InvalidCubicTextureDimensions => {
                 "Invalid dimensions were given for a cubic texture target"
             },
diff --git a/components/script/dom/window.rs b/components/script/dom/window.rs
index 15a5b15c6fe..2208a00bac8 100644
--- a/components/script/dom/window.rs
+++ b/components/script/dom/window.rs
@@ -2460,7 +2460,7 @@ impl Window {
     pub fn evaluate_media_queries_and_report_changes(&self) {
         rooted_vec!(let mut mql_list);
         self.media_query_lists.for_each(|mql| {
-            if let MediaQueryListMatchState::Changed(_) = mql.evaluate_changes() {
+            if let MediaQueryListMatchState::Changed = mql.evaluate_changes() {
                 // Recording list of changed Media Queries
                 mql_list.push(Dom::from_ref(&*mql));
             }