Add release notes for 1.87.0 #140802

BoxyUwU · 2025-05-08T13:37:16Z

Originally drafted in #140133

cc @rust-lang/release

r? @pietroalbani as you're running the release

rustbot · 2025-05-08T13:37:20Z

Failed to set assignee to pietroalbani: cannot assign: response: {"message":"Not Found","documentation_url":"https://docs.github.com/rest/issues/assignees#add-assignees-to-an-issue","status":"404"}

Note: Only org members with at least the repository "read" role, users with write permissions, or people who have commented on the PR may be assigned.

BoxyUwU · 2025-05-08T13:37:27Z

huh?

BoxyUwU · 2025-05-08T13:37:41Z

oh,

Kobzol · 2025-05-08T14:02:06Z

This is genius 😆

pietroalbini · 2025-05-08T14:08:39Z

Boxy....

@bors r+ rollup

bors · 2025-05-08T14:08:44Z

📌 Commit a278f8d has been approved by pietroalbini

It is now in the queue for this repository.

…lbini Add release notes for 1.87.0 Originally drafted in rust-lang#140133 cc ``@rust-lang/release`` r? ``@pietroalbani`` as you're running the release

…iaskrgr Rollup of 8 pull requests Successful merges: - rust-lang#140095 (Eliminate `word_and_empty` methods.) - rust-lang#140341 (Clarify black_box warning a bit) - rust-lang#140684 (Only include `dyn Trait<Assoc = ...>` associated type bounds for `Self: Sized` associated types if they are provided) - rust-lang#140707 (Structurally normalize in range pattern checking in HIR typeck) - rust-lang#140716 (Improve `-Zremap-path-scope` tests with dependency) - rust-lang#140800 (Make `rustdoc-tempdir-removal` run-make tests work on other platforms than linux) - rust-lang#140802 (Add release notes for 1.87.0) - rust-lang#140811 (Enable triagebot note functionality for rust-lang/rust) r? `@ghost` `@rustbot` modify labels: rollup

pthariensflame · 2025-05-09T00:37:52Z

RELEASES.md

+- [`Vec::extract_if`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.extract_if)
+- [`vec::ExtractIf`](https://doc.rust-lang.org/nightly/std/vec/struct.ExtractIf.html)
+- [`LinkedList::extract_if`](https://doc.rust-lang.org/nightly/std/collections/struct.LinkedList.html#method.extract_if)
+- [`linked_list::ExtractIf`](https://doc.rust-lang.org/nightly/std/collections/linked_list/struct.ExtractIf.html)
+- [`<[T]>::split_off`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off)
+- [`<[T]>::split_off_mut`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off_mut)
+- [`<[T]>::split_off_first`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off_first)
+- [`<[T]>::split_off_first_mut`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off_first_mut)
+- [`<[T]>::split_off_last`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off_last)
+- [`<[T]>::split_off_last_mut`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off_last_mut)
+- [`String::extend_from_within`](https://doc.rust-lang.org/stable/alloc/string/struct.String.html#method.extend_from_within)
+- [`os_str::Display`](https://doc.rust-lang.org/nightly/std/ffi/os_str/struct.Display.html)
+- [`OsString::display`](https://doc.rust-lang.org/nightly/std/ffi/struct.OsString.html#method.display)
+- [`OsStr::display`](https://doc.rust-lang.org/nightly/std/ffi/struct.OsStr.html#method.display)
+- [`io::pipe`](https://doc.rust-lang.org/nightly/std/io/fn.pipe.html)
+- [`io::PipeReader`](https://doc.rust-lang.org/nightly/std/io/struct.PipeReader.html)
+- [`io::PipeWriter`](https://doc.rust-lang.org/nightly/std/io/struct.PipeWriter.html)
+- [`impl From<PipeReader> for OwnedHandle`](https://doc.rust-lang.org/nightly/std/os/windows/io/struct.OwnedHandle.html#impl-From%3CPipeReader%3E-for-OwnedHandle)
+- [`impl From<PipeWriter> for OwnedHandle`](https://doc.rust-lang.org/nightly/std/os/windows/io/struct.OwnedHandle.html#impl-From%3CPipeWriter%3E-for-OwnedHandle)
+- [`impl From<PipeReader> for Stdio`](https://doc.rust-lang.org/nightly/std/process/struct.Stdio.html)
+- [`impl From<PipeWriter> for Stdio`](https://doc.rust-lang.org/nightly/std/process/struct.Stdio.html#impl-From%3CPipeWriter%3E-for-Stdio)
+- [`impl From<PipeReader> for OwnedFd`](https://doc.rust-lang.org/nightly/std/os/fd/struct.OwnedFd.html#impl-From%3CPipeReader%3E-for-OwnedFd)
+- [`impl From<PipeWriter> for OwnedFd`](https://doc.rust-lang.org/nightly/std/os/fd/struct.OwnedFd.html#impl-From%3CPipeWriter%3E-for-OwnedFd)
+- [`Box<MaybeUninit<T>>::write`](https://doc.rust-lang.org/nightly/std/boxed/struct.Box.html#method.write)
+- [`impl TryFrom<Vec<u8>> for String`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#impl-TryFrom%3CVec%3Cu8%3E%3E-for-String)
+
+These APIs are now stable in const contexts:
+
+- [`<*const T>::offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/primitive.pointer.html#method.offset_from_unsigned)
+- [`<*const T>::byte_offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/primitive.pointer.html#method.byte_offset_from_unsigned)
+- [`<*mut T>::offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/primitive.pointer.html#method.offset_from_unsigned-1)
+- [`<*mut T>::byte_offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/primitive.pointer.html#method.byte_offset_from_unsigned-1)
+- [`NonNull::offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/ptr/struct.NonNull.html#method.offset_from_unsigned)
+- [`NonNull::byte_offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/ptr/struct.NonNull.html#method.byte_offset_from_unsigned)
+- [`<uN>::cast_signed`](https://doc.rust-lang.org/nightly/std/primitive.usize.html#method.cast_signed)
+- [`NonZero::<uN>::cast_signed`](https://doc.rust-lang.org/nightly/std/num/struct.NonZero.html#method.cast_signed-5).
+- [`<iN>::cast_signed`](https://doc.rust-lang.org/nightly/std/primitive.isize.html#method.cast_signed).
+- [`NonZero::<iN>::cast_unsigned`](https://doc.rust-lang.org/nightly/std/num/struct.NonZero.html#method.cast_unsigned-5).
+- [`<uN>::is_multiple_of`](https://doc.rust-lang.org/nightly/std/primitive.usize.html#method.is_multiple_of)
+- [`<uN>::unbounded_shl`](https://doc.rust-lang.org/nightly/std/primitive.usize.html#method.unbounded_shl)
+- [`<uN>::unbounded_shr`](https://doc.rust-lang.org/nightly/std/primitive.usize.html#method.unbounded_shr)
+- [`<iN>::unbounded_shl`](https://doc.rust-lang.org/nightly/std/primitive.isize.html#method.unbounded_shl)
+- [`<iN>::unbounded_shr`](https://doc.rust-lang.org/nightly/std/primitive.isize.html#method.unbounded_shr)
+- [`<str>::from_utf8`](https://doc.rust-lang.org/nightly/std/primitive.str.html#method.from_utf8)
+- [`<str>::from_utf8_mut`](https://doc.rust-lang.org/nightly/std/primitive.str.html#method.from_utf8_mut)
+- [`<str>::from_utf8_unchecked`](https://doc.rust-lang.org/nightly/std/primitive.str.html#method.from_utf8_unchecked)
+- [`<str>::from_utf8_unchecked_mut`](https://doc.rust-lang.org/nightly/std/primitive.str.html#method.from_utf8_unchecked_mut)
+- [`core::str::from_utf8_mut`](https://doc.rust-lang.org/nightly/std/str/fn.from_utf8_mut.html)
+- [`<[T]>::copy_from_slice`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.copy_from_slice)
+- [`SocketAddr::set_ip`](https://doc.rust-lang.org/nightly/std/net/enum.SocketAddr.html#method.set_ip)
+- [`SocketAddr::set_port`](https://doc.rust-lang.org/nightly/std/net/enum.SocketAddr.html#method.set_port),
+- [`SocketAddrV4::set_ip`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV4.html#method.set_ip)
+- [`SocketAddrV4::set_port`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV4.html#method.set_port),
+- [`SocketAddrV6::set_ip`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV6.html#method.set_ip)
+- [`SocketAddrV6::set_port`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV6.html#method.set_port)
+- [`SocketAddrV6::set_flowinfo`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV6.html#method.set_flowinfo)
+- [`SocketAddrV6::set_scope_id`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV6.html#method.set_scope_id)
+- [`char::is_digit`](https://doc.rust-lang.org/nightly/std/primitive.char.html#method.is_digit)
+- [`char::is_whitespace`](https://doc.rust-lang.org/nightly/std/primitive.char.html#method.is_whitespace)
+- [`<iN>::midpoint`](https://doc.rust-lang.org/std/primitive.isize.html#method.midpoint)
+- [`<[[T; N]]>::as_flattened`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.as_flattened)
+- [`<[[T; N]]>::as_flattened_mut`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.as_flattened_mut) 
+- [`String::into_bytes`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.into_bytes)
+- [`String::as_str`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.as_str)
+- [`String::capacity`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.capacity)
+- [`String::as_bytes`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.as_bytes)
+- [`String::len`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.len)
+- [`String::is_empty`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.is_empty)
+- [`String::as_mut_str`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.as_mut_str)
+- [`String::as_mut_vec`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.as_mut_vec)
+- [`Vec::as_ptr`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.as_ptr)
+- [`Vec::as_slice`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.as_slice)
+- [`Vec::capacity`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.capacity)
+- [`Vec::len`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.len)
+- [`Vec::is_empty`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.is_empty)
+- [`Vec::as_mut_slice`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.as_mut_slice)
+- [`Vec::as_mut_ptr`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.as_mut_ptr)


Suggested change

- [`Vec::extract_if`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.extract_if)

- [`vec::ExtractIf`](https://doc.rust-lang.org/nightly/std/vec/struct.ExtractIf.html)

- [`LinkedList::extract_if`](https://doc.rust-lang.org/nightly/std/collections/struct.LinkedList.html#method.extract_if)

- [`linked_list::ExtractIf`](https://doc.rust-lang.org/nightly/std/collections/linked_list/struct.ExtractIf.html)

- [`<[T]>::split_off`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off)

- [`<[T]>::split_off_mut`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off_mut)

- [`<[T]>::split_off_first`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off_first)

- [`<[T]>::split_off_first_mut`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off_first_mut)

- [`<[T]>::split_off_last`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off_last)

- [`<[T]>::split_off_last_mut`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off_last_mut)

- [`String::extend_from_within`](https://doc.rust-lang.org/stable/alloc/string/struct.String.html#method.extend_from_within)

- [`os_str::Display`](https://doc.rust-lang.org/nightly/std/ffi/os_str/struct.Display.html)

- [`OsString::display`](https://doc.rust-lang.org/nightly/std/ffi/struct.OsString.html#method.display)

- [`OsStr::display`](https://doc.rust-lang.org/nightly/std/ffi/struct.OsStr.html#method.display)

- [`io::pipe`](https://doc.rust-lang.org/nightly/std/io/fn.pipe.html)

- [`io::PipeReader`](https://doc.rust-lang.org/nightly/std/io/struct.PipeReader.html)

- [`io::PipeWriter`](https://doc.rust-lang.org/nightly/std/io/struct.PipeWriter.html)

- [`impl From<PipeReader> for OwnedHandle`](https://doc.rust-lang.org/nightly/std/os/windows/io/struct.OwnedHandle.html#impl-From%3CPipeReader%3E-for-OwnedHandle)

- [`impl From<PipeWriter> for OwnedHandle`](https://doc.rust-lang.org/nightly/std/os/windows/io/struct.OwnedHandle.html#impl-From%3CPipeWriter%3E-for-OwnedHandle)

- [`impl From<PipeReader> for Stdio`](https://doc.rust-lang.org/nightly/std/process/struct.Stdio.html)

- [`impl From<PipeWriter> for Stdio`](https://doc.rust-lang.org/nightly/std/process/struct.Stdio.html#impl-From%3CPipeWriter%3E-for-Stdio)

- [`impl From<PipeReader> for OwnedFd`](https://doc.rust-lang.org/nightly/std/os/fd/struct.OwnedFd.html#impl-From%3CPipeReader%3E-for-OwnedFd)

- [`impl From<PipeWriter> for OwnedFd`](https://doc.rust-lang.org/nightly/std/os/fd/struct.OwnedFd.html#impl-From%3CPipeWriter%3E-for-OwnedFd)

- [`Box<MaybeUninit<T>>::write`](https://doc.rust-lang.org/nightly/std/boxed/struct.Box.html#method.write)

- [`impl TryFrom<Vec<u8>> for String`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#impl-TryFrom%3CVec%3Cu8%3E%3E-for-String)

These APIs are now stable in const contexts:

- [`<*const T>::offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/primitive.pointer.html#method.offset_from_unsigned)

- [`<*const T>::byte_offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/primitive.pointer.html#method.byte_offset_from_unsigned)

- [`<*mut T>::offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/primitive.pointer.html#method.offset_from_unsigned-1)

- [`<*mut T>::byte_offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/primitive.pointer.html#method.byte_offset_from_unsigned-1)

- [`NonNull::offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/ptr/struct.NonNull.html#method.offset_from_unsigned)

- [`NonNull::byte_offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/ptr/struct.NonNull.html#method.byte_offset_from_unsigned)

- [`<uN>::cast_signed`](https://doc.rust-lang.org/nightly/std/primitive.usize.html#method.cast_signed)

- [`NonZero::<uN>::cast_signed`](https://doc.rust-lang.org/nightly/std/num/struct.NonZero.html#method.cast_signed-5).

- [`<iN>::cast_signed`](https://doc.rust-lang.org/nightly/std/primitive.isize.html#method.cast_signed).

- [`NonZero::<iN>::cast_unsigned`](https://doc.rust-lang.org/nightly/std/num/struct.NonZero.html#method.cast_unsigned-5).

- [`<uN>::is_multiple_of`](https://doc.rust-lang.org/nightly/std/primitive.usize.html#method.is_multiple_of)

- [`<uN>::unbounded_shl`](https://doc.rust-lang.org/nightly/std/primitive.usize.html#method.unbounded_shl)

- [`<uN>::unbounded_shr`](https://doc.rust-lang.org/nightly/std/primitive.usize.html#method.unbounded_shr)

- [`<iN>::unbounded_shl`](https://doc.rust-lang.org/nightly/std/primitive.isize.html#method.unbounded_shl)

- [`<iN>::unbounded_shr`](https://doc.rust-lang.org/nightly/std/primitive.isize.html#method.unbounded_shr)

- [`<str>::from_utf8`](https://doc.rust-lang.org/nightly/std/primitive.str.html#method.from_utf8)

- [`<str>::from_utf8_mut`](https://doc.rust-lang.org/nightly/std/primitive.str.html#method.from_utf8_mut)

- [`<str>::from_utf8_unchecked`](https://doc.rust-lang.org/nightly/std/primitive.str.html#method.from_utf8_unchecked)

- [`<str>::from_utf8_unchecked_mut`](https://doc.rust-lang.org/nightly/std/primitive.str.html#method.from_utf8_unchecked_mut)

- [`core::str::from_utf8_mut`](https://doc.rust-lang.org/nightly/std/str/fn.from_utf8_mut.html)

- [`<[T]>::copy_from_slice`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.copy_from_slice)

- [`SocketAddr::set_ip`](https://doc.rust-lang.org/nightly/std/net/enum.SocketAddr.html#method.set_ip)

- [`SocketAddr::set_port`](https://doc.rust-lang.org/nightly/std/net/enum.SocketAddr.html#method.set_port),

- [`SocketAddrV4::set_ip`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV4.html#method.set_ip)

- [`SocketAddrV4::set_port`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV4.html#method.set_port),

- [`SocketAddrV6::set_ip`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV6.html#method.set_ip)

- [`SocketAddrV6::set_port`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV6.html#method.set_port)

- [`SocketAddrV6::set_flowinfo`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV6.html#method.set_flowinfo)

- [`SocketAddrV6::set_scope_id`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV6.html#method.set_scope_id)

- [`char::is_digit`](https://doc.rust-lang.org/nightly/std/primitive.char.html#method.is_digit)

- [`char::is_whitespace`](https://doc.rust-lang.org/nightly/std/primitive.char.html#method.is_whitespace)

- [`<iN>::midpoint`](https://doc.rust-lang.org/std/primitive.isize.html#method.midpoint)

- [`<[[T; N]]>::as_flattened`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.as_flattened)

- [`<[[T; N]]>::as_flattened_mut`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.as_flattened_mut)

- [`String::into_bytes`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.into_bytes)

- [`String::as_str`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.as_str)

- [`String::capacity`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.capacity)

- [`String::as_bytes`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.as_bytes)

- [`String::len`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.len)

- [`String::is_empty`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.is_empty)

- [`String::as_mut_str`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.as_mut_str)

- [`String::as_mut_vec`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.as_mut_vec)

- [`Vec::as_ptr`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.as_ptr)

- [`Vec::as_slice`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.as_slice)

- [`Vec::capacity`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.capacity)

- [`Vec::len`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.len)

- [`Vec::is_empty`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.is_empty)

- [`Vec::as_mut_slice`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.as_mut_slice)

- [`Vec::as_mut_ptr`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.as_mut_ptr)

- [`Vec::extract_if`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.extract_if)

- [`vec::ExtractIf`](https://doc.rust-lang.org/nightly/std/vec/struct.ExtractIf.html)

- [`LinkedList::extract_if`](https://doc.rust-lang.org/nightly/std/collections/struct.LinkedList.html#method.extract_if)

- [`linked_list::ExtractIf`](https://doc.rust-lang.org/nightly/std/collections/linked_list/struct.ExtractIf.html)

- [`<[T]>::split_off`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off)

- [`<[T]>::split_off_mut`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off_mut)

- [`<[T]>::split_off_first`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off_first)

- [`<[T]>::split_off_first_mut`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off_first_mut)

- [`<[T]>::split_off_last`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off_last)

- [`<[T]>::split_off_last_mut`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_off_last_mut)

- [`String::extend_from_within`](https://doc.rust-lang.org/stable/alloc/string/struct.String.html#method.extend_from_within)

- [`os_str::Display`](https://doc.rust-lang.org/nightly/std/ffi/os_str/struct.Display.html)

- [`OsString::display`](https://doc.rust-lang.org/nightly/std/ffi/struct.OsString.html#method.display)

- [`OsStr::display`](https://doc.rust-lang.org/nightly/std/ffi/struct.OsStr.html#method.display)

- [`io::pipe`](https://doc.rust-lang.org/nightly/std/io/fn.pipe.html)

- [`io::PipeReader`](https://doc.rust-lang.org/nightly/std/io/struct.PipeReader.html)

- [`io::PipeWriter`](https://doc.rust-lang.org/nightly/std/io/struct.PipeWriter.html)

- [`impl From<PipeReader> for OwnedHandle`](https://doc.rust-lang.org/nightly/std/os/windows/io/struct.OwnedHandle.html#impl-From%3CPipeReader%3E-for-OwnedHandle)

- [`impl From<PipeWriter> for OwnedHandle`](https://doc.rust-lang.org/nightly/std/os/windows/io/struct.OwnedHandle.html#impl-From%3CPipeWriter%3E-for-OwnedHandle)

- [`impl From<PipeReader> for Stdio`](https://doc.rust-lang.org/nightly/std/process/struct.Stdio.html)

- [`impl From<PipeWriter> for Stdio`](https://doc.rust-lang.org/nightly/std/process/struct.Stdio.html#impl-From%3CPipeWriter%3E-for-Stdio)

- [`impl From<PipeReader> for OwnedFd`](https://doc.rust-lang.org/nightly/std/os/fd/struct.OwnedFd.html#impl-From%3CPipeReader%3E-for-OwnedFd)

- [`impl From<PipeWriter> for OwnedFd`](https://doc.rust-lang.org/nightly/std/os/fd/struct.OwnedFd.html#impl-From%3CPipeWriter%3E-for-OwnedFd)

- [`Box<MaybeUninit<T>>::write`](https://doc.rust-lang.org/nightly/std/boxed/struct.Box.html#method.write)

- [`impl TryFrom<Vec<u8>> for String`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#impl-TryFrom%3CVec%3Cu8%3E%3E-for-String)

- [`<*const T>::offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/primitive.pointer.html#method.offset_from_unsigned)

- [`<*const T>::byte_offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/primitive.pointer.html#method.byte_offset_from_unsigned)

- [`<*mut T>::offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/primitive.pointer.html#method.offset_from_unsigned-1)

- [`<*mut T>::byte_offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/primitive.pointer.html#method.byte_offset_from_unsigned-1)

- [`NonNull::offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/ptr/struct.NonNull.html#method.offset_from_unsigned)

- [`NonNull::byte_offset_from_unsigned`](https://doc.rust-lang.org/nightly/std/ptr/struct.NonNull.html#method.byte_offset_from_unsigned)

- [`<uN>::cast_signed`](https://doc.rust-lang.org/nightly/std/primitive.usize.html#method.cast_signed)

- [`NonZero::<uN>::cast_signed`](https://doc.rust-lang.org/nightly/std/num/struct.NonZero.html#method.cast_signed-5).

- [`<iN>::cast_unsigned`](https://doc.rust-lang.org/nightly/std/primitive.isize.html#method.cast_unsigned).

- [`NonZero::<iN>::cast_unsigned`](https://doc.rust-lang.org/nightly/std/num/struct.NonZero.html#method.cast_unsigned-5).

- [`<uN>::is_multiple_of`](https://doc.rust-lang.org/nightly/std/primitive.usize.html#method.is_multiple_of)

- [`<uN>::unbounded_shl`](https://doc.rust-lang.org/nightly/std/primitive.usize.html#method.unbounded_shl)

- [`<uN>::unbounded_shr`](https://doc.rust-lang.org/nightly/std/primitive.usize.html#method.unbounded_shr)

- [`<iN>::unbounded_shl`](https://doc.rust-lang.org/nightly/std/primitive.isize.html#method.unbounded_shl)

- [`<iN>::unbounded_shr`](https://doc.rust-lang.org/nightly/std/primitive.isize.html#method.unbounded_shr)

- [`<iN>::midpoint`](https://doc.rust-lang.org/std/primitive.isize.html#method.midpoint)

- [`<str>::from_utf8`](https://doc.rust-lang.org/nightly/std/primitive.str.html#method.from_utf8)

- [`<str>::from_utf8_mut`](https://doc.rust-lang.org/nightly/std/primitive.str.html#method.from_utf8_mut)

- [`<str>::from_utf8_unchecked`](https://doc.rust-lang.org/nightly/std/primitive.str.html#method.from_utf8_unchecked)

- [`<str>::from_utf8_unchecked_mut`](https://doc.rust-lang.org/nightly/std/primitive.str.html#method.from_utf8_unchecked_mut)

- [`<[[T; N]]>::as_flattened`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.as_flattened)

- [`<[[T; N]]>::as_flattened_mut`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.as_flattened_mut)

These APIs are now stable in const contexts:

- [`core::str::from_utf8_mut`](https://doc.rust-lang.org/nightly/std/str/fn.from_utf8_mut.html)

- [`<[T]>::copy_from_slice`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.copy_from_slice)

- [`SocketAddr::set_ip`](https://doc.rust-lang.org/nightly/std/net/enum.SocketAddr.html#method.set_ip)

- [`SocketAddr::set_port`](https://doc.rust-lang.org/nightly/std/net/enum.SocketAddr.html#method.set_port),

- [`SocketAddrV4::set_ip`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV4.html#method.set_ip)

- [`SocketAddrV4::set_port`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV4.html#method.set_port),

- [`SocketAddrV6::set_ip`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV6.html#method.set_ip)

- [`SocketAddrV6::set_port`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV6.html#method.set_port)

- [`SocketAddrV6::set_flowinfo`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV6.html#method.set_flowinfo)

- [`SocketAddrV6::set_scope_id`](https://doc.rust-lang.org/nightly/std/net/struct.SocketAddrV6.html#method.set_scope_id)

- [`char::is_digit`](https://doc.rust-lang.org/nightly/std/primitive.char.html#method.is_digit)

- [`char::is_whitespace`](https://doc.rust-lang.org/nightly/std/primitive.char.html#method.is_whitespace)

- [`String::into_bytes`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.into_bytes)

- [`String::as_str`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.as_str)

- [`String::capacity`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.capacity)

- [`String::as_bytes`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.as_bytes)

- [`String::len`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.len)

- [`String::is_empty`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.is_empty)

- [`String::as_mut_str`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.as_mut_str)

- [`String::as_mut_vec`](https://doc.rust-lang.org/nightly/std/string/struct.String.html#method.as_mut_vec)

- [`Vec::as_ptr`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.as_ptr)

- [`Vec::as_slice`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.as_slice)

- [`Vec::capacity`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.capacity)

- [`Vec::len`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.len)

- [`Vec::is_empty`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.is_empty)

- [`Vec::as_mut_slice`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.as_mut_slice)

- [`Vec::as_mut_ptr`](https://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.as_mut_ptr)

Many of the things listed as const-stablized here were actually stabilized in any form in this release, and the automation just picked up that they were const-stabilized at the same time as being stabilized and put them in the wrong section. Additionally, <iN>::cast_signed doesn't exist, and should be <iN>::cast_unsigned instead.

Rollup merge of rust-lang#140802 - BoxyUwU:relnotes_1_87_0, r=pietroalbini Add release notes for 1.87.0 Originally drafted in rust-lang#140133 cc `@rust-lang/release` r? `@pietroalbani` as you're running the release

pthariensflame · 2025-05-09T00:50:58Z

@BoxyUwU @pietroalbini This was merged with major issues, as noted. Can this be reverted and/or corrected?

BoxyUwU · 2025-05-09T03:12:36Z

I'm not sure its wrong to put newly stabilized APIs in the const section if they were stabilized as const from the start. The <iN>::cast_unsigned thing should be fixed though

pietroalbini · 2025-05-09T09:19:25Z

@pthariensflame could you please put up a new PR with the changes you proposed, and request my review on it?

pietroalbini · 2025-05-09T17:03:24Z

Included the changes in #140864

pthariensflame · 2025-05-09T18:52:39Z

@pthariensflame could you please put up a new PR with the changes you proposed, and request my review on it?

@pietroalbini Thanks for doing it yourself; I would have but was asleep during the time you sent that.

…xyUwU Last minute relnotes fix This PR applies most of the suggestions in rust-lang#140802 (comment) (except for `as_flattened_mut`, which is indeed a const stabilization this cycle), and replaces all links from nightly to stable. r? `@BoxyUwU`

Add release notes for 1.87.0

a278f8d

rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-release Relevant to the release subteam, which will review and decide on the PR/issue. labels May 8, 2025

BoxyUwU assigned pietroalbini May 8, 2025

BoxyUwU mentioned this pull request May 8, 2025

Draft release notes for 1.87 #140133

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bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels May 8, 2025

matthiaskrgr mentioned this pull request May 8, 2025

Rollup of 8 pull requests #140818

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matthiaskrgr mentioned this pull request May 8, 2025

Rollup of 8 pull requests #140820

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pthariensflame reviewed May 9, 2025

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bors merged commit 196b5cb into rust-lang:master May 9, 2025
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rustbot added this to the 1.88.0 milestone May 9, 2025

pietroalbini mentioned this pull request May 9, 2025

Last minute relnotes fix #140864

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Add release notes for 1.87.0 #140802

Add release notes for 1.87.0 #140802

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Add release notes for 1.87.0 #140802

Add release notes for 1.87.0 #140802

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