diff --git a/src/liballoc/lib.rs b/src/liballoc/lib.rs
index 7f3acc933d4..41e22d84699 100644
--- a/src/liballoc/lib.rs
+++ b/src/liballoc/lib.rs
@@ -62,8 +62,8 @@
 #![allow(explicit_outlives_requirements)]
 
 #![warn(deprecated_in_future)]
-#![warn(intra_doc_link_resolution_failure)]
 #![warn(missing_debug_implementations)]
+#![deny(intra_doc_link_resolution_failure)] // rustdoc is run without -D warnings
 
 #![cfg_attr(not(test), feature(generator_trait))]
 #![cfg_attr(test, feature(test))]
diff --git a/src/libcore/lib.rs b/src/libcore/lib.rs
index 63688e70c45..615549f47bb 100644
--- a/src/libcore/lib.rs
+++ b/src/libcore/lib.rs
@@ -60,8 +60,8 @@
 
 #![warn(deprecated_in_future)]
 #![warn(missing_docs)]
-#![warn(intra_doc_link_resolution_failure)]
 #![warn(missing_debug_implementations)]
+#![deny(intra_doc_link_resolution_failure)] // rustdoc is run without -D warnings
 
 #![feature(allow_internal_unstable)]
 #![feature(arbitrary_self_types)]
diff --git a/src/stdsimd b/src/stdsimd
index 2792b45c975..2323a858f06 160000
--- a/src/stdsimd
+++ b/src/stdsimd
@@ -1 +1 @@
-Subproject commit 2792b45c975880038240d477adb0d66f760ac048
+Subproject commit 2323a858f060a0d2a39786a619885608017d538f