Merge subtree update for toolchain nightly-2025-08-07

library/alloc/src/collections/btree/map.rs

@@ -382,6 +382,7 @@ impl<'a, K: 'a, V: 'a> Default for Iter<'a, K, V> {
 /// documentation for more.
 ///
 /// [`iter_mut`]: BTreeMap::iter_mut
+#[must_use = "iterators are lazy and do nothing unless consumed"]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct IterMut<'a, K: 'a, V: 'a> {
     range: LazyLeafRange<marker::ValMut<'a>, K, V>,
@@ -391,7 +392,6 @@ pub struct IterMut<'a, K: 'a, V: 'a> {
     _marker: PhantomData<&'a mut (K, V)>,
 }
 
-#[must_use = "iterators are lazy and do nothing unless consumed"]
 #[stable(feature = "collection_debug", since = "1.17.0")]
 impl<K: fmt::Debug, V: fmt::Debug> fmt::Debug for IterMut<'_, K, V> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {

library/core/src/intrinsics/mod.rs

@@ -2692,7 +2692,7 @@ pub unsafe fn vtable_align(_ptr: *const ()) -> usize;
 /// More specifically, this is the offset in bytes between successive
 /// items of the same type, including alignment padding.
 ///
-/// The stabilized version of this intrinsic is [`size_of`].
+/// The stabilized version of this intrinsic is [`core::mem::size_of`].
 #[rustc_nounwind]
 #[unstable(feature = "core_intrinsics", issue = "none")]
 #[rustc_intrinsic_const_stable_indirect]
@@ -2706,7 +2706,7 @@ pub const fn size_of<T>() -> usize;
 /// Therefore, implementations must not require the user to uphold
 /// any safety invariants.
 ///
-/// The stabilized version of this intrinsic is [`align_of`].
+/// The stabilized version of this intrinsic is [`core::mem::align_of`].
 #[rustc_nounwind]
 #[unstable(feature = "core_intrinsics", issue = "none")]
 #[rustc_intrinsic_const_stable_indirect]
@@ -2729,7 +2729,7 @@ pub const fn variant_count<T>() -> usize;
 
 /// The size of the referenced value in bytes.
 ///
-/// The stabilized version of this intrinsic is [`size_of_val`].
+/// The stabilized version of this intrinsic is [`core::mem::size_of_val`].
 ///
 /// # Safety
 ///
@@ -2742,7 +2742,7 @@ pub const unsafe fn size_of_val<T: ?Sized>(ptr: *const T) -> usize;
 
 /// The required alignment of the referenced value.
 ///
-/// The stabilized version of this intrinsic is [`align_of_val`].
+/// The stabilized version of this intrinsic is [`core::mem::align_of_val`].
 ///
 /// # Safety
 ///

library/core/src/num/int_macros.rs

@@ -177,14 +177,14 @@ macro_rules! int_impl {
         ///
         #[doc = concat!("let n: ", stringify!($SelfT), " = 0b_01100100;")]
         ///
-        /// assert_eq!(n.isolate_most_significant_one(), 0b_01000000);
-        #[doc = concat!("assert_eq!(0_", stringify!($SelfT), ".isolate_most_significant_one(), 0);")]
+        /// assert_eq!(n.isolate_highest_one(), 0b_01000000);
+        #[doc = concat!("assert_eq!(0_", stringify!($SelfT), ".isolate_highest_one(), 0);")]
         /// ```
         #[unstable(feature = "isolate_most_least_significant_one", issue = "136909")]
         #[must_use = "this returns the result of the operation, \
                       without modifying the original"]
         #[inline(always)]
-        pub const fn isolate_most_significant_one(self) -> Self {
+        pub const fn isolate_highest_one(self) -> Self {
             self & (((1 as $SelfT) << (<$SelfT>::BITS - 1)).wrapping_shr(self.leading_zeros()))
         }
 
@@ -198,14 +198,14 @@ macro_rules! int_impl {
         ///
         #[doc = concat!("let n: ", stringify!($SelfT), " = 0b_01100100;")]
         ///
-        /// assert_eq!(n.isolate_least_significant_one(), 0b_00000100);
-        #[doc = concat!("assert_eq!(0_", stringify!($SelfT), ".isolate_least_significant_one(), 0);")]
+        /// assert_eq!(n.isolate_lowest_one(), 0b_00000100);
+        #[doc = concat!("assert_eq!(0_", stringify!($SelfT), ".isolate_lowest_one(), 0);")]
         /// ```
         #[unstable(feature = "isolate_most_least_significant_one", issue = "136909")]
         #[must_use = "this returns the result of the operation, \
                       without modifying the original"]
         #[inline(always)]
-        pub const fn isolate_least_significant_one(self) -> Self {
+        pub const fn isolate_lowest_one(self) -> Self {
             self & self.wrapping_neg()
         }
 

library/core/src/num/nonzero.rs

@@ -654,15 +654,15 @@ macro_rules! nonzero_integer {
             #[doc = concat!("let a = NonZero::<", stringify!($Int), ">::new(0b_01100100)?;")]
             #[doc = concat!("let b = NonZero::<", stringify!($Int), ">::new(0b_01000000)?;")]
             ///
-            /// assert_eq!(a.isolate_most_significant_one(), b);
+            /// assert_eq!(a.isolate_highest_one(), b);
             /// # Some(())
             /// # }
             /// ```
             #[unstable(feature = "isolate_most_least_significant_one", issue = "136909")]
             #[must_use = "this returns the result of the operation, \
                         without modifying the original"]
             #[inline(always)]
-            pub const fn isolate_most_significant_one(self) -> Self {
+            pub const fn isolate_highest_one(self) -> Self {
                 let n = self.get() & (((1 as $Int) << (<$Int>::BITS - 1)).wrapping_shr(self.leading_zeros()));
 
                 // SAFETY:
@@ -684,15 +684,15 @@ macro_rules! nonzero_integer {
             #[doc = concat!("let a = NonZero::<", stringify!($Int), ">::new(0b_01100100)?;")]
             #[doc = concat!("let b = NonZero::<", stringify!($Int), ">::new(0b_00000100)?;")]
             ///
-            /// assert_eq!(a.isolate_least_significant_one(), b);
+            /// assert_eq!(a.isolate_lowest_one(), b);
             /// # Some(())
             /// # }
             /// ```
             #[unstable(feature = "isolate_most_least_significant_one", issue = "136909")]
             #[must_use = "this returns the result of the operation, \
                         without modifying the original"]
             #[inline(always)]
-            pub const fn isolate_least_significant_one(self) -> Self {
+            pub const fn isolate_lowest_one(self) -> Self {
                 let n = self.get();
                 let n = n & n.wrapping_neg();
 

library/core/src/num/uint_macros.rs

@@ -229,14 +229,14 @@ macro_rules! uint_impl {
         ///
         #[doc = concat!("let n: ", stringify!($SelfT), " = 0b_01100100;")]
         ///
-        /// assert_eq!(n.isolate_most_significant_one(), 0b_01000000);
-        #[doc = concat!("assert_eq!(0_", stringify!($SelfT), ".isolate_most_significant_one(), 0);")]
+        /// assert_eq!(n.isolate_highest_one(), 0b_01000000);
+        #[doc = concat!("assert_eq!(0_", stringify!($SelfT), ".isolate_highest_one(), 0);")]
         /// ```
         #[unstable(feature = "isolate_most_least_significant_one", issue = "136909")]
         #[must_use = "this returns the result of the operation, \
                       without modifying the original"]
         #[inline(always)]
-        pub const fn isolate_most_significant_one(self) -> Self {
+        pub const fn isolate_highest_one(self) -> Self {
             self & (((1 as $SelfT) << (<$SelfT>::BITS - 1)).wrapping_shr(self.leading_zeros()))
         }
 
@@ -250,14 +250,14 @@ macro_rules! uint_impl {
         ///
         #[doc = concat!("let n: ", stringify!($SelfT), " = 0b_01100100;")]
         ///
-        /// assert_eq!(n.isolate_least_significant_one(), 0b_00000100);
-        #[doc = concat!("assert_eq!(0_", stringify!($SelfT), ".isolate_least_significant_one(), 0);")]
+        /// assert_eq!(n.isolate_lowest_one(), 0b_00000100);
+        #[doc = concat!("assert_eq!(0_", stringify!($SelfT), ".isolate_lowest_one(), 0);")]
         /// ```
         #[unstable(feature = "isolate_most_least_significant_one", issue = "136909")]
         #[must_use = "this returns the result of the operation, \
                       without modifying the original"]
         #[inline(always)]
-        pub const fn isolate_least_significant_one(self) -> Self {
+        pub const fn isolate_lowest_one(self) -> Self {
             self & self.wrapping_neg()
         }
 

library/coretests/tests/nonzero.rs

@@ -321,7 +321,7 @@ fn nonzero_trailing_zeros() {
 }
 
 #[test]
-fn test_nonzero_isolate_most_significant_one() {
+fn test_nonzero_isolate_highest_one() {
     // Signed most significant one
     macro_rules! nonzero_int_impl {
         ($($T:ty),+) => {
@@ -335,8 +335,8 @@ fn test_nonzero_isolate_most_significant_one() {
                     let mut i = 0;
                     while i < <$T>::BITS {
                         assert_eq!(
-                            NonZero::<$T>::new(BITS >> i).unwrap().isolate_most_significant_one(),
-                            NonZero::<$T>::new(MOST_SIG_ONE >> i).unwrap().isolate_most_significant_one()
+                            NonZero::<$T>::new(BITS >> i).unwrap().isolate_highest_one(),
+                            NonZero::<$T>::new(MOST_SIG_ONE >> i).unwrap().isolate_highest_one()
                         );
                         i += 1;
                     }
@@ -356,8 +356,8 @@ fn test_nonzero_isolate_most_significant_one() {
                     let mut i = 0;
                     while i < <$T>::BITS {
                         assert_eq!(
-                            NonZero::<$T>::new(BITS >> i).unwrap().isolate_most_significant_one(),
-                            NonZero::<$T>::new(MOST_SIG_ONE >> i).unwrap().isolate_most_significant_one(),
+                            NonZero::<$T>::new(BITS >> i).unwrap().isolate_highest_one(),
+                            NonZero::<$T>::new(MOST_SIG_ONE >> i).unwrap().isolate_highest_one(),
                         );
                         i += 1;
                     }
@@ -371,7 +371,7 @@ fn test_nonzero_isolate_most_significant_one() {
 }
 
 #[test]
-fn test_nonzero_isolate_least_significant_one() {
+fn test_nonzero_isolate_lowest_one() {
     // Signed least significant one
     macro_rules! nonzero_int_impl {
         ($($T:ty),+) => {
@@ -385,8 +385,8 @@ fn test_nonzero_isolate_least_significant_one() {
                     let mut i = 0;
                     while i < <$T>::BITS {
                         assert_eq!(
-                            NonZero::<$T>::new(BITS << i).unwrap().isolate_least_significant_one(),
-                            NonZero::<$T>::new(LEAST_SIG_ONE << i).unwrap().isolate_least_significant_one()
+                            NonZero::<$T>::new(BITS << i).unwrap().isolate_lowest_one(),
+                            NonZero::<$T>::new(LEAST_SIG_ONE << i).unwrap().isolate_lowest_one()
                         );
                         i += 1;
                     }
@@ -406,8 +406,8 @@ fn test_nonzero_isolate_least_significant_one() {
                     let mut i = 0;
                     while i < <$T>::BITS {
                         assert_eq!(
-                            NonZero::<$T>::new(BITS << i).unwrap().isolate_least_significant_one(),
-                            NonZero::<$T>::new(LEAST_SIG_ONE << i).unwrap().isolate_least_significant_one(),
+                            NonZero::<$T>::new(BITS << i).unwrap().isolate_lowest_one(),
+                            NonZero::<$T>::new(LEAST_SIG_ONE << i).unwrap().isolate_lowest_one(),
                         );
                         i += 1;
                     }

library/coretests/tests/num/int_macros.rs

@@ -194,7 +194,7 @@ macro_rules! int_module {
         }
 
         #[test]
-        fn test_isolate_most_significant_one() {
+        fn test_isolate_highest_one() {
             const BITS: $T = -1;
             const MOST_SIG_ONE: $T = 1 << (<$T>::BITS - 1);
 
@@ -203,15 +203,15 @@ macro_rules! int_module {
             let mut i = 0;
             while i < <$T>::BITS {
                 assert_eq!(
-                    (BITS >> i).isolate_most_significant_one(),
-                    (MOST_SIG_ONE >> i).isolate_most_significant_one()
+                    (BITS >> i).isolate_highest_one(),
+                    (MOST_SIG_ONE >> i).isolate_highest_one()
                 );
                 i += 1;
             }
         }
 
         #[test]
-        fn test_isolate_least_significant_one() {
+        fn test_isolate_lowest_one() {
             const BITS: $T = -1;
             const LEAST_SIG_ONE: $T = 1;
 
@@ -220,8 +220,8 @@ macro_rules! int_module {
             let mut i = 0;
             while i < <$T>::BITS {
                 assert_eq!(
-                    (BITS << i).isolate_least_significant_one(),
-                    (LEAST_SIG_ONE << i).isolate_least_significant_one()
+                    (BITS << i).isolate_lowest_one(),
+                    (LEAST_SIG_ONE << i).isolate_lowest_one()
                 );
                 i += 1;
             }

library/coretests/tests/num/uint_macros.rs

@@ -151,7 +151,7 @@ macro_rules! uint_module {
         }
 
         #[test]
-        fn test_isolate_most_significant_one() {
+        fn test_isolate_highest_one() {
             const BITS: $T = <$T>::MAX;
             const MOST_SIG_ONE: $T = 1 << (<$T>::BITS - 1);
 
@@ -160,15 +160,15 @@ macro_rules! uint_module {
             let mut i = 0;
             while i < <$T>::BITS {
                 assert_eq!(
-                    (BITS >> i).isolate_most_significant_one(),
-                    (MOST_SIG_ONE >> i).isolate_most_significant_one(),
+                    (BITS >> i).isolate_highest_one(),
+                    (MOST_SIG_ONE >> i).isolate_highest_one(),
                 );
                 i += 1;
             }
         }
 
         #[test]
-        fn test_isolate_least_significant_one() {
+        fn test_isolate_lowest_one() {
             const BITS: $T = <$T>::MAX;
             const LEAST_SIG_ONE: $T = 1;
 
@@ -177,8 +177,8 @@ macro_rules! uint_module {
             let mut i = 0;
             while i < <$T>::BITS {
                 assert_eq!(
-                    (BITS << i).isolate_least_significant_one(),
-                    (LEAST_SIG_ONE << i).isolate_least_significant_one(),
+                    (BITS << i).isolate_lowest_one(),
+                    (LEAST_SIG_ONE << i).isolate_lowest_one(),
                 );
                 i += 1;
             }

library/std/src/sys/args/common.rs

@@ -12,7 +12,7 @@ impl !Sync for Args {}
 
 impl Args {
     #[inline]
-    pub(super) fn new(args: Vec<OsString>) -> Self {
+    pub fn new(args: Vec<OsString>) -> Self {
         Args { iter: args.into_iter() }
     }
 }

rust-toolchain.toml

@@ -2,5 +2,5 @@
 # standard library we currently track.
 
 [toolchain]
-channel = "nightly-2025-08-06"
+channel = "nightly-2025-08-07"
 components = ["llvm-tools-preview", "rustc-dev", "rust-src", "rustfmt"]

tool_config/kani-version.toml

@@ -2,4 +2,4 @@
 # incompatible with the verify-std repo.
 
 [kani]
-commit = "fade7057e845eb5e5c6c9bc00a6d72b338765683"
+commit = "9deeec1bec16c4b1f1173d5d652f99d330a4650f"