Language

Compiler

Platform Support

Refer to Rust's platform support page for more information on Rust's tiered platform support.

Libraries

Stabilized APIs

• impl PartialEq<Cow<'_, [U]>> for Vec<T, A>
• impl PartialEq<Cow<'_, [U]>> for &[T]
• impl PartialEq<Cow<'_, [U]>> for &mut [T]
• std::alloc::Allocator
• std::alloc::Global
• std::alloc::System
• impl Allocator for Global
• impl Allocator for System
• impl<A: Allocator> Allocator for &A
• impl<T: Allocator, A: Allocator> Allocator for Box<T, A>
• impl<A: Allocator> Allocator for &mut A
• impl<T: Allocator, A: Allocator> Allocator for Arc<T, A>
• impl<T: Allocator, A: Allocator> Allocator for Rc<T, A>
• Box::new_in
• Box::from_raw_in
• Box::from_non_null_in
• Box::into_raw_with_allocator
• Box::into_non_null_with_allocator
• Box::allocator
• Vec::new_in
• Vec::with_capacity_in
• Vec::from_raw_parts_in
• Vec::from_parts_in
• Vec::into_raw_parts_with_allocator
• Vec::into_parts_with_allocator
• Vec::allocator
• Child::main_thread_handle
• impl Default for std::sync::Once
• bool::toggle
• Box::take
• Box::map
• Rc::map
• Arc::map
• impl AsRef<T> for !
• impl AsMut<T> for !
• core::mem::DropGuard
• core::mem::conjure_zst
• UnsafeCell::replace
• UnsafeCell::as_ref_unchecked
• UnsafeCell::as_mut_unchecked
• str::trim_prefix
• str::trim_suffix
• [T]::trim_prefix
• [T]::trim_suffix
• Path::trim_prefix
• Vec::from_fn
• os::windows::process::CommandExt::show_window

Cargo

• Introduced Cargo's own linting system: some Cargo warnings are now emitted as lints that users can control in the [lints.cargo] table. This includes a new built-in unused dependency check via the cargo::unused_dependencies lint. docs #17298
• Introduced minimum publish age configurations, also known as dependency cooldowns. When the relevant config is set, the resolver ignores versions published more recently than that, unless they are already in Cargo.lock. (RFC 3923) docs #17335
• cargo-install: now uses the existing lockfile in the .crate tarball by default. --locked in cargo install becomes a no-op. #17388
• Cargo now uses a new directory layout for intermediate build artifacts. Tools that inspect the build directory may need to use Cargo’s JSON messages to locate build artifacts instead of relying on the build directory layout. The layout is not a stable interface and is subject to change. (build cache doc) #17354

Rustdoc

Compatibility Notes

Other