Fix may not to appropriate might not or must not

Author: Ali Malik

library/alloc/benches/binary_heap.rs

@@ -36,7 +36,7 @@ fn bench_peek_mut_deref_mut(b: &mut Bencher) {
         let mut peek_mut = bheap.peek_mut().unwrap();
         // The compiler shouldn't be able to optimize away the `sift_down`
         // assignment in `PeekMut`'s `DerefMut` implementation since
-        // the loop may not run.
+        // the loop might not run.
         for &i in vec.iter() {
             *peek_mut = i;
         }

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

@@ -409,7 +409,7 @@ impl<K, V> NodeRef<marker::Dying, K, V, marker::LeafOrInternal> {
 
 impl<'a, K, V, Type> NodeRef<marker::Mut<'a>, K, V, Type> {
     /// Temporarily takes out another mutable reference to the same node. Beware, as
-    /// this method is very dangerous, doubly so since it may not immediately appear
+    /// this method is very dangerous, doubly so since it might not immediately appear
     /// dangerous.
     ///
     /// Because mutable pointers can roam anywhere around the tree, the returned
@@ -777,7 +777,7 @@ impl<BorrowType, K, V, NodeType, HandleType>
 
 impl<'a, K, V, NodeType, HandleType> Handle<NodeRef<marker::Mut<'a>, K, V, NodeType>, HandleType> {
     /// Temporarily takes out another mutable handle on the same location. Beware, as
-    /// this method is very dangerous, doubly so since it may not immediately appear
+    /// this method is very dangerous, doubly so since it might not immediately appear
     /// dangerous.
     ///
     /// For details, see `NodeRef::reborrow_mut`.

library/alloc/src/fmt.rs

@@ -138,7 +138,7 @@
 //! the `0` flag (see below) is specified for numerics, then the implicit fill character is
 //! `0`.
 //!
-//! Note that alignment may not be implemented by some types. In particular, it
+//! Note that alignment might not be implemented by some types. In particular, it
 //! is not generally implemented for the `Debug` trait.  A good way to ensure
 //! padding is applied is to format your input, then pad this resulting string
 //! to obtain your output:
@@ -300,7 +300,7 @@
 //! count := parameter | integer
 //! parameter := argument '$'
 //! ```
-//! In the above grammar, `text` may not contain any `'{'` or `'}'` characters.
+//! In the above grammar, `text` must not contain any `'{'` or `'}'` characters.
 //!
 //! # Formatting traits
 //!

library/alloc/src/rc.rs

@@ -2526,7 +2526,7 @@ unsafe fn data_offset<T: ?Sized>(ptr: *const T) -> isize {
     // SAFETY: since the only unsized types possible are slices, trait objects,
     // and extern types, the input safety requirement is currently enough to
     // satisfy the requirements of align_of_val_raw; this is an implementation
-    // detail of the language that may not be relied upon outside of std.
+    // detail of the language that must not be relied upon outside of std.
     unsafe { data_offset_align(align_of_val_raw(ptr)) }
 }
 

library/alloc/src/string.rs

@@ -921,7 +921,7 @@ impl String {
     /// assert!(s.capacity() >= 10);
     /// ```
     ///
-    /// This may not actually increase the capacity:
+    /// This might not actually increase the capacity:
     ///
     /// ```
     /// let mut s = String::with_capacity(10);
@@ -969,7 +969,7 @@ impl String {
     /// assert!(s.capacity() >= 10);
     /// ```
     ///
-    /// This may not actually increase the capacity:
+    /// This might not actually increase the capacity:
     ///
     /// ```
     /// let mut s = String::with_capacity(10);
@@ -1517,7 +1517,7 @@ impl String {
     }
 
     /// Returns the length of this `String`, in bytes, not [`char`]s or
-    /// graphemes. In other words, it may not be what a human considers the
+    /// graphemes. In other words, it might not be what a human considers the
     /// length of the string.
     ///
     /// # Examples

library/alloc/src/sync.rs

@@ -1056,8 +1056,8 @@ impl<T: ?Sized> Arc<T> {
     // Non-inlined part of `drop`.
     #[inline(never)]
     unsafe fn drop_slow(&mut self) {
-        // Destroy the data at this time, even though we may not free the box
-        // allocation itself (there may still be weak pointers lying around).
+        // Destroy the data at this time, even though we must not free the box
+        // allocation itself (there might still be weak pointers lying around).
         unsafe { ptr::drop_in_place(Self::get_mut_unchecked(self)) };
 
         // Drop the weak ref collectively held by all strong references
@@ -2587,7 +2587,7 @@ unsafe fn data_offset<T: ?Sized>(ptr: *const T) -> isize {
     // SAFETY: since the only unsized types possible are slices, trait objects,
     // and extern types, the input safety requirement is currently enough to
     // satisfy the requirements of align_of_val_raw; this is an implementation
-    // detail of the language that may not be relied upon outside of std.
+    // detail of the language that must not be relied upon outside of std.
     unsafe { data_offset_align(align_of_val_raw(ptr)) }
 }
 

library/alloc/src/vec/mod.rs

@@ -2229,7 +2229,7 @@ impl<T, A: Allocator> Vec<T, A> {
         unsafe {
             let mut ptr = self.as_mut_ptr().add(self.len());
             // Use SetLenOnDrop to work around bug where compiler
-            // may not realize the store through `ptr` through self.set_len()
+            // might not realize the store through `ptr` through self.set_len()
             // don't alias.
             let mut local_len = SetLenOnDrop::new(&mut self.len);
 

library/alloc/src/vec/source_iter_marker.rs

@@ -56,7 +56,7 @@ where
 
         let src = unsafe { iterator.as_inner().as_into_iter() };
         // check if SourceIter contract was upheld
-        // caveat: if they weren't we may not even make it to this point
+        // caveat: if they weren't we might not even make it to this point
         debug_assert_eq!(src_buf, src.buf.as_ptr());
         // check InPlaceIterable contract. This is only possible if the iterator advanced the
         // source pointer at all. If it uses unchecked access via TrustedRandomAccess

library/alloc/tests/binary_heap.rs

@@ -408,7 +408,7 @@ fn test_retain() {
 // old binaryheap failed this test
 //
 // Integrity means that all elements are present after a comparison panics,
-// even if the order may not be correct.
+// even if the order might not be correct.
 //
 // Destructors must be called exactly once per element.
 // FIXME: re-enable emscripten once it can unwind again

library/core/src/alloc/global.rs

@@ -99,7 +99,7 @@ use crate::ptr;
 ///   this trait are allowed to rely on the contracts defined on each method,
 ///   and implementors must ensure such contracts remain true.
 ///
-/// * You may not rely on allocations actually happening, even if there are explicit
+/// * You must not rely on allocations actually happening, even if there are explicit
 ///   heap allocations in the source. The optimizer may detect unused allocations that it can either
 ///   eliminate entirely or move to the stack and thus never invoke the allocator. The
 ///   optimizer may further assume that allocation is infallible, so code that used to fail due