diff --git a/third_party/rust/chromium_crates_io/vendor/bytemuck-1.21.0/src/lib.rs b/third_party/rust/chromium_crates_io/vendor/bytemuck-1.21.0/src/lib.rs
index 3ae485ae66..c8770c9a5b 100644
--- a/third_party/rust/chromium_crates_io/vendor/bytemuck-1.21.0/src/lib.rs
+++ b/third_party/rust/chromium_crates_io/vendor/bytemuck-1.21.0/src/lib.rs
@@ -5,16 +5,16 @@
 #![allow(clippy::uninlined_format_args)]
 #![allow(clippy::result_unit_err)]
 #![allow(clippy::type_complexity)]
-#![cfg_attr(feature = "nightly_docs", feature(doc_cfg))]
-#![cfg_attr(feature = "nightly_portable_simd", feature(portable_simd))]
-#![cfg_attr(feature = "nightly_float", feature(f16, f128))]
-#![cfg_attr(
-  all(
-    feature = "nightly_stdsimd",
-    any(target_arch = "x86_64", target_arch = "x86")
-  ),
-  feature(stdarch_x86_avx512)
-)]
+//#![cfg_attr(feature = "nightly_docs", feature(doc_cfg))]
+//#![cfg_attr(feature = "nightly_portable_simd", feature(portable_simd))]
+//#![cfg_attr(feature = "nightly_float", feature(f16, f128))]
+//#![cfg_attr(
+//  all(
+//    feature = "nightly_stdsimd",
+//    any(target_arch = "x86_64", target_arch = "x86")
+//  ),
+//  feature(stdarch_x86_avx512)
+//)]
 
 //! This crate gives small utilities for casting between plain data types.
 //!