diff --git a/naga/src/back/msl/mod.rs b/naga/src/back/msl/mod.rs
index b9e24454e..83245d6d3 100644
--- a/naga/src/back/msl/mod.rs
+++ b/naga/src/back/msl/mod.rs
@@ -723,6 +723,5 @@ pub fn write_string(
 
 #[test]
 fn test_error_size() {
-    use std::mem::size_of;
     assert_eq!(size_of::<Error>(), 32);
 }
diff --git a/naga/src/front/wgsl/error.rs b/naga/src/front/wgsl/error.rs
index 7bdbf12d2..4af902594 100644
--- a/naga/src/front/wgsl/error.rs
+++ b/naga/src/front/wgsl/error.rs
@@ -17,9 +17,6 @@ use std::ops::Range;
 use termcolor::{ColorChoice, NoColor, StandardStream};
 use thiserror::Error;
 
-#[cfg(test)]
-use std::mem::size_of;
-
 #[derive(Clone, Debug)]
 pub struct ParseError {
     message: String,
diff --git a/naga/src/non_max_u32.rs b/naga/src/non_max_u32.rs
index 2ad402e49..7cb641b4e 100644
--- a/naga/src/non_max_u32.rs
+++ b/naga/src/non_max_u32.rs
@@ -140,6 +140,5 @@ impl<'de> serde::Deserialize<'de> for NonMaxU32 {
 
 #[test]
 fn size() {
-    use core::mem::size_of;
     assert_eq!(size_of::<Option<NonMaxU32>>(), size_of::<u32>());
 }
diff --git a/naga/src/proc/typifier.rs b/naga/src/proc/typifier.rs
index 135928990..d813bc9ea 100644
--- a/naga/src/proc/typifier.rs
+++ b/naga/src/proc/typifier.rs
@@ -908,6 +908,5 @@ impl<'a> ResolveContext<'a> {
 
 #[test]
 fn test_error_size() {
-    use std::mem::size_of;
     assert_eq!(size_of::<ResolveError>(), 32);
 }
diff --git a/wgpu-core/src/command/bundle.rs b/wgpu-core/src/command/bundle.rs
index 099446426..e192c0b99 100644
--- a/wgpu-core/src/command/bundle.rs
+++ b/wgpu-core/src/command/bundle.rs
@@ -85,7 +85,6 @@ use alloc::{
     vec::Vec,
 };
 use core::{
-    mem::size_of,
     num::{NonZeroU32, NonZeroU64},
     ops::Range,
 };
diff --git a/wgpu-core/src/command/compute.rs b/wgpu-core/src/command/compute.rs
index d973176c6..8519e8be8 100644
--- a/wgpu-core/src/command/compute.rs
+++ b/wgpu-core/src/command/compute.rs
@@ -2,7 +2,7 @@ use thiserror::Error;
 use wgt::{BufferAddress, DynamicOffset};
 
 use alloc::{borrow::Cow, boxed::Box, sync::Arc, vec::Vec};
-use core::{fmt, mem::size_of, str};
+use core::{fmt, str};
 
 use crate::{
     binding_model::{
diff --git a/wgpu-core/src/command/render.rs b/wgpu-core/src/command/render.rs
index cf14d6b4d..6d59f1b18 100644
--- a/wgpu-core/src/command/render.rs
+++ b/wgpu-core/src/command/render.rs
@@ -1,5 +1,5 @@
 use alloc::{borrow::Cow, sync::Arc, vec::Vec};
-use core::{fmt, mem::size_of, num::NonZeroU32, ops::Range, str};
+use core::{fmt, num::NonZeroU32, ops::Range, str};
 
 use arrayvec::ArrayVec;
 use thiserror::Error;
diff --git a/wgpu-core/src/id.rs b/wgpu-core/src/id.rs
index a74b9e909..8858e1f89 100644
--- a/wgpu-core/src/id.rs
+++ b/wgpu-core/src/id.rs
@@ -4,7 +4,6 @@ use core::{
     fmt::{self, Debug},
     hash::Hash,
     marker::PhantomData,
-    mem::size_of,
     num::NonZeroU64,
 };
 use wgt::WasmNotSendSync;
diff --git a/wgpu-core/src/indirect_validation.rs b/wgpu-core/src/indirect_validation.rs
index 8cce7614b..624ad3f9e 100644
--- a/wgpu-core/src/indirect_validation.rs
+++ b/wgpu-core/src/indirect_validation.rs
@@ -1,5 +1,4 @@
 use alloc::{boxed::Box, format, string::ToString as _};
-use core::mem::size_of;
 use core::num::NonZeroU64;
 
 use thiserror::Error;
diff --git a/wgpu-core/src/pipeline_cache.rs b/wgpu-core/src/pipeline_cache.rs
index b206c09ea..0253163f6 100644
--- a/wgpu-core/src/pipeline_cache.rs
+++ b/wgpu-core/src/pipeline_cache.rs
@@ -1,5 +1,3 @@
-use core::mem::size_of;
-
 use thiserror::Error;
 use wgt::AdapterInfo;
 
diff --git a/wgpu-core/src/registry.rs b/wgpu-core/src/registry.rs
index 753fb0c1e..e015eb93a 100644
--- a/wgpu-core/src/registry.rs
+++ b/wgpu-core/src/registry.rs
@@ -1,5 +1,4 @@
 use alloc::sync::Arc;
-use core::mem::size_of;
 
 use crate::{
     id::Id,
diff --git a/wgpu-hal/examples/halmark/main.rs b/wgpu-hal/examples/halmark/main.rs
index 731d9f0f0..f7ce594d6 100644
--- a/wgpu-hal/examples/halmark/main.rs
+++ b/wgpu-hal/examples/halmark/main.rs
@@ -14,9 +14,7 @@ use winit::{
 
 use std::{
     borrow::{Borrow, Cow},
-    iter,
-    mem::size_of,
-    ptr,
+    iter, ptr,
     time::Instant,
 };
 
diff --git a/wgpu-hal/examples/ray-traced-triangle/main.rs b/wgpu-hal/examples/ray-traced-triangle/main.rs
index 730f6b111..e0083a309 100644
--- a/wgpu-hal/examples/ray-traced-triangle/main.rs
+++ b/wgpu-hal/examples/ray-traced-triangle/main.rs
@@ -8,9 +8,7 @@ use raw_window_handle::{HasDisplayHandle, HasWindowHandle};
 use glam::{Affine3A, Mat4, Vec3};
 use std::{
     borrow::{Borrow, Cow},
-    iter,
-    mem::size_of,
-    ptr,
+    iter, ptr,
     time::Instant,
 };
 use wgpu_types::Dx12BackendOptions;
diff --git a/wgpu-hal/src/dx12/adapter.rs b/wgpu-hal/src/dx12/adapter.rs
index bc5c943d8..82b62c516 100644
--- a/wgpu-hal/src/dx12/adapter.rs
+++ b/wgpu-hal/src/dx12/adapter.rs
@@ -1,11 +1,4 @@
-use std::{
-    mem::{size_of, size_of_val},
-    ptr,
-    string::String,
-    sync::Arc,
-    thread,
-    vec::Vec,
-};
+use std::{ptr, string::String, sync::Arc, thread, vec::Vec};
 
 use parking_lot::Mutex;
 use windows::{
diff --git a/wgpu-hal/src/dx12/device.rs b/wgpu-hal/src/dx12/device.rs
index acdfcb308..8b0c66d06 100644
--- a/wgpu-hal/src/dx12/device.rs
+++ b/wgpu-hal/src/dx12/device.rs
@@ -1,7 +1,6 @@
 use std::{
     borrow::Cow,
-    ffi,
-    mem::{self, size_of, size_of_val},
+    ffi, mem,
     num::NonZeroU32,
     ptr, slice,
     string::{String, ToString as _},
diff --git a/wgpu-hal/src/dx12/instance.rs b/wgpu-hal/src/dx12/instance.rs
index 69f1ac786..ef02c8aca 100644
--- a/wgpu-hal/src/dx12/instance.rs
+++ b/wgpu-hal/src/dx12/instance.rs
@@ -1,4 +1,4 @@
-use std::{mem::size_of_val, string::String, sync::Arc, vec::Vec};
+use std::{string::String, sync::Arc, vec::Vec};
 
 use parking_lot::RwLock;
 use windows::{
diff --git a/wgpu-hal/src/gles/command.rs b/wgpu-hal/src/gles/command.rs
index 2bff6278f..330142eac 100644
--- a/wgpu-hal/src/gles/command.rs
+++ b/wgpu-hal/src/gles/command.rs
@@ -1,9 +1,5 @@
 use alloc::string::String;
-use core::{
-    mem::{self, size_of, size_of_val},
-    ops::Range,
-    slice,
-};
+use core::{mem, ops::Range, slice};
 
 use arrayvec::ArrayVec;
 
diff --git a/wgpu-hal/src/gles/queue.rs b/wgpu-hal/src/gles/queue.rs
index 73681b7b7..da7bc1c19 100644
--- a/wgpu-hal/src/gles/queue.rs
+++ b/wgpu-hal/src/gles/queue.rs
@@ -1,7 +1,7 @@
 use super::{conv::is_layered_target, Command as C, PrivateCapabilities};
 use alloc::sync::Arc;
 use arrayvec::ArrayVec;
-use core::{mem::size_of, slice, sync::atomic::Ordering};
+use core::{slice, sync::atomic::Ordering};
 use glow::HasContext;
 
 const DEBUG_ID: u32 = 0;
diff --git a/wgpu-hal/src/gles/wgl.rs b/wgpu-hal/src/gles/wgl.rs
index 71dedf194..e827561ec 100644
--- a/wgpu-hal/src/gles/wgl.rs
+++ b/wgpu-hal/src/gles/wgl.rs
@@ -3,7 +3,7 @@
 use std::{
     borrow::ToOwned as _,
     ffi::{c_void, CStr, CString},
-    mem::{self, size_of, size_of_val, ManuallyDrop},
+    mem::{self, ManuallyDrop},
     os::raw::c_int,
     ptr,
     string::String,
diff --git a/wgpu-hal/src/metal/command.rs b/wgpu-hal/src/metal/command.rs
index 65e3fafe7..7de30feb7 100644
--- a/wgpu-hal/src/metal/command.rs
+++ b/wgpu-hal/src/metal/command.rs
@@ -2,7 +2,6 @@ use super::{conv, AsNative, TimestampQuerySupport};
 use crate::CommandEncoder as _;
 use std::{
     borrow::{Cow, ToOwned as _},
-    mem::size_of,
     ops::Range,
     vec::Vec,
 };
diff --git a/wgpu-hal/src/vulkan/command.rs b/wgpu-hal/src/vulkan/command.rs
index ca19d0dca..dd10c5520 100644
--- a/wgpu-hal/src/vulkan/command.rs
+++ b/wgpu-hal/src/vulkan/command.rs
@@ -3,11 +3,7 @@ use super::conv;
 use arrayvec::ArrayVec;
 use ash::vk;
 
-use std::{
-    mem::{self, size_of},
-    ops::Range,
-    slice,
-};
+use std::{mem, ops::Range, slice};
 
 const ALLOCATION_GRANULARITY: u32 = 16;
 const DST_IMAGE_LAYOUT: vk::ImageLayout = vk::ImageLayout::TRANSFER_DST_OPTIMAL;
diff --git a/wgpu-hal/src/vulkan/device.rs b/wgpu-hal/src/vulkan/device.rs
index 9fce6b37e..102898584 100644
--- a/wgpu-hal/src/vulkan/device.rs
+++ b/wgpu-hal/src/vulkan/device.rs
@@ -2,7 +2,7 @@ use std::{
     borrow::{Cow, ToOwned as _},
     collections::BTreeMap,
     ffi::{CStr, CString},
-    mem::{self, size_of, MaybeUninit},
+    mem::{self, MaybeUninit},
     num::NonZeroU32,
     ptr, slice,
     sync::Arc,
diff --git a/wgpu-types/src/lib.rs b/wgpu-types/src/lib.rs
index 9587216de..f1f522637 100644
--- a/wgpu-types/src/lib.rs
+++ b/wgpu-types/src/lib.rs
@@ -17,7 +17,6 @@ extern crate alloc;
 use alloc::{string::String, vec, vec::Vec};
 use core::{
     hash::{Hash, Hasher},
-    mem::size_of,
     num::NonZeroU32,
     ops::Range,
 };