Auto merge of #99524 - cuviper:relnotes-1.63.0, r=Mark-Simulacrum
Add release notes for Rust 1.63.0
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RELEASES.md
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RELEASES.md
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Version 1.63.0 (2022-08-11)
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==========================
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Language
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--------
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- [Remove migrate borrowck mode for pre-NLL errors.][95565]
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- [Modify MIR building to drop repeat expressions with length zero.][95953]
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- [Remove label/lifetime shadowing warnings.][96296]
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- [Allow explicit generic arguments in the presence of `impl Trait` args.][96868]
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- [Make `cenum_impl_drop_cast` warnings deny-by-default.][97652]
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- [Prevent unwinding when `-C panic=abort` is used regardless of declared ABI.][96959]
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- [lub: don't bail out due to empty binders.][97867]
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Compiler
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--------
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- [Stabilize the `bundle` native library modifier,][95818] also removing the
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deprecated `static-nobundle` linking kind.
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- [Add Apple WatchOS compile targets\*.][95243]
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- [Add a Windows application manifest to rustc-main.][96737]
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\* Refer to Rust's [platform support page][platform-support-doc] for more
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information on Rust's tiered platform support.
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Libraries
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---------
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- [Implement `Copy`, `Clone`, `PartialEq` and `Eq` for `core::fmt::Alignment`.][94530]
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- [Extend `ptr::null` and `null_mut` to all thin (including extern) types.][94954]
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- [`impl Read and Write for VecDeque<u8>`.][95632]
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- [STD support for the Nintendo 3DS.][95897]
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- [Make write/print macros eagerly drop temporaries.][96455]
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- [Implement internal traits that enable `[OsStr]::join`.][96881]
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- [Implement `Hash` for `core::alloc::Layout`.][97034]
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- [Add capacity documentation for `OsString`.][97202]
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- [Put a bound on collection misbehavior.][97316]
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- [Make `std::mem::needs_drop` accept `?Sized`.][97675]
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- [`impl Termination for Infallible` and then make the `Result` impls of `Termination` more generic.][97803]
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- [Document Rust's stance on `/proc/self/mem`.][97837]
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Stabilized APIs
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---------------
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- [`array::from_fn`]
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- [`Box::into_pin`]
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- [`BinaryHeap::try_reserve`]
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- [`BinaryHeap::try_reserve_exact`]
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- [`OsString::try_reserve`]
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- [`OsString::try_reserve_exact`]
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- [`PathBuf::try_reserve`]
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- [`PathBuf::try_reserve_exact`]
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- [`Path::try_exists`]
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- [`Ref::filter_map`]
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- [`RefMut::filter_map`]
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- [`NonNull::<[T]>::len`][`NonNull::<slice>::len`]
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- [`ToOwned::clone_into`]
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- [`Ipv6Addr::to_ipv4_mapped`]
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- [`unix::io::AsFd`]
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- [`unix::io::BorrowedFd<'fd>`]
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- [`unix::io::OwnedFd`]
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- [`windows::io::AsHandle`]
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- [`windows::io::BorrowedHandle<'handle>`]
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- [`windows::io::OwnedHandle`]
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- [`windows::io::HandleOrInvalid`]
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- [`windows::io::HandleOrNull`]
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- [`windows::io::InvalidHandleError`]
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- [`windows::io::NullHandleError`]
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- [`windows::io::AsSocket`]
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- [`windows::io::BorrowedSocket<'handle>`]
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- [`windows::io::OwnedSocket`]
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- [`thread::scope`]
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- [`thread::Scope`]
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- [`thread::ScopedJoinHandle`]
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These APIs are now usable in const contexts:
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- [`array::from_ref`]
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- [`slice::from_ref`]
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- [`intrinsics::copy`]
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- [`intrinsics::copy_nonoverlapping`]
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- [`<*const T>::copy_to`]
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- [`<*const T>::copy_to_nonoverlapping`]
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- [`<*mut T>::copy_to`]
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- [`<*mut T>::copy_to_nonoverlapping`]
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- [`<*mut T>::copy_from`]
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- [`<*mut T>::copy_from_nonoverlapping`]
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- [`str::from_utf8`]
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- [`Utf8Error::error_len`]
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- [`Utf8Error::valid_up_to`]
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- [`Condvar::new`]
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- [`Mutex::new`]
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- [`RwLock::new`]
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Cargo
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-----
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- [Stabilize the `--config path` command-line argument.][cargo/10755]
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- [Expose rust-version in the environment as `CARGO_PKG_RUST_VERSION`.][cargo/10713]
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Compatibility Notes
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-------------------
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- [`#[link]` attributes are now checked more strictly,][96885] which may introduce
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errors for invalid attribute arguments that were previously ignored.
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Internal Changes
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----------------
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These changes provide no direct user facing benefits, but represent significant
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improvements to the internals and overall performance of rustc
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and related tools.
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- [Prepare Rust for LLVM opaque pointers.][94214]
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[94214]: https://github.com/rust-lang/rust/pull/94214/
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[94530]: https://github.com/rust-lang/rust/pull/94530/
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[94954]: https://github.com/rust-lang/rust/pull/94954/
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[95243]: https://github.com/rust-lang/rust/pull/95243/
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[95565]: https://github.com/rust-lang/rust/pull/95565/
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[95632]: https://github.com/rust-lang/rust/pull/95632/
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[95818]: https://github.com/rust-lang/rust/pull/95818/
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[95897]: https://github.com/rust-lang/rust/pull/95897/
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[95953]: https://github.com/rust-lang/rust/pull/95953/
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[96296]: https://github.com/rust-lang/rust/pull/96296/
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[96455]: https://github.com/rust-lang/rust/pull/96455/
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[96737]: https://github.com/rust-lang/rust/pull/96737/
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[96868]: https://github.com/rust-lang/rust/pull/96868/
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[96881]: https://github.com/rust-lang/rust/pull/96881/
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[96885]: https://github.com/rust-lang/rust/pull/96885/
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[96959]: https://github.com/rust-lang/rust/pull/96959/
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[97034]: https://github.com/rust-lang/rust/pull/97034/
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[97202]: https://github.com/rust-lang/rust/pull/97202/
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[97316]: https://github.com/rust-lang/rust/pull/97316/
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[97652]: https://github.com/rust-lang/rust/pull/97652/
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[97675]: https://github.com/rust-lang/rust/pull/97675/
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[97803]: https://github.com/rust-lang/rust/pull/97803/
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[97837]: https://github.com/rust-lang/rust/pull/97837/
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[97867]: https://github.com/rust-lang/rust/pull/97867/
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[cargo/10713]: https://github.com/rust-lang/cargo/pull/10713/
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[cargo/10755]: https://github.com/rust-lang/cargo/pull/10755/
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[`array::from_fn`]: https://doc.rust-lang.org/stable/std/array/fn.from_fn.html
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[`Box::into_pin`]: https://doc.rust-lang.org/stable/std/boxed/struct.Box.html#method.into_pin
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[`BinaryHeap::try_reserve_exact`]: https://doc.rust-lang.org/stable/alloc/collections/binary_heap/struct.BinaryHeap.html#method.try_reserve_exact
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[`BinaryHeap::try_reserve`]: https://doc.rust-lang.org/stable/std/collections/struct.BinaryHeap.html#method.try_reserve
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[`OsString::try_reserve`]: https://doc.rust-lang.org/stable/std/ffi/struct.OsString.html#method.try_reserve
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[`OsString::try_reserve_exact`]: https://doc.rust-lang.org/stable/std/ffi/struct.OsString.html#method.try_reserve_exact
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[`PathBuf::try_reserve`]: https://doc.rust-lang.org/stable/std/path/struct.PathBuf.html#method.try_reserve
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[`PathBuf::try_reserve_exact`]: https://doc.rust-lang.org/stable/std/path/struct.PathBuf.html#method.try_reserve_exact
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[`Path::try_exists`]: https://doc.rust-lang.org/stable/std/path/struct.Path.html#method.try_exists
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[`Ref::filter_map`]: https://doc.rust-lang.org/stable/std/cell/struct.Ref.html#method.filter_map
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[`RefMut::filter_map`]: https://doc.rust-lang.org/stable/std/cell/struct.RefMut.html#method.filter_map
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[`NonNull::<slice>::len`]: https://doc.rust-lang.org/stable/std/ptr/struct.NonNull.html#method.len
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[`ToOwned::clone_into`]: https://doc.rust-lang.org/stable/std/borrow/trait.ToOwned.html#method.clone_into
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[`Ipv6Addr::to_ipv4_mapped`]: https://doc.rust-lang.org/stable/std/net/struct.Ipv6Addr.html#method.to_ipv4_mapped
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[`unix::io::AsFd`]: https://doc.rust-lang.org/stable/std/os/unix/io/trait.AsFd.html
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[`unix::io::BorrowedFd<'fd>`]: https://doc.rust-lang.org/stable/std/os/unix/io/struct.BorrowedFd.html
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[`unix::io::OwnedFd`]: https://doc.rust-lang.org/stable/std/os/unix/io/struct.OwnedFd.html
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[`windows::io::AsHandle`]: https://doc.rust-lang.org/stable/std/os/windows/io/trait.AsHandle.html
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[`windows::io::BorrowedHandle<'handle>`]: https://doc.rust-lang.org/stable/std/os/windows/io/struct.BorrowedHandle.html
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[`windows::io::OwnedHandle`]: https://doc.rust-lang.org/stable/std/os/windows/io/struct.OwnedHandle.html
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[`windows::io::HandleOrInvalid`]: https://doc.rust-lang.org/stable/std/os/windows/io/struct.HandleOrInvalid.html
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[`windows::io::HandleOrNull`]: https://doc.rust-lang.org/stable/std/os/windows/io/struct.HandleOrNull.html
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[`windows::io::InvalidHandleError`]: https://doc.rust-lang.org/stable/std/os/windows/io/struct.InvalidHandleError.html
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[`windows::io::NullHandleError`]: https://doc.rust-lang.org/stable/std/os/windows/io/struct.NullHandleError.html
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[`windows::io::AsSocket`]: https://doc.rust-lang.org/stable/std/os/windows/io/trait.AsSocket.html
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[`windows::io::BorrowedSocket<'handle>`]: https://doc.rust-lang.org/stable/std/os/windows/io/struct.BorrowedSocket.html
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[`windows::io::OwnedSocket`]: https://doc.rust-lang.org/stable/std/os/windows/io/struct.OwnedSocket.html
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[`thread::scope`]: https://doc.rust-lang.org/stable/std/thread/fn.scope.html
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[`thread::Scope`]: https://doc.rust-lang.org/stable/std/thread/struct.Scope.html
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[`thread::ScopedJoinHandle`]: https://doc.rust-lang.org/stable/std/thread/struct.ScopedJoinHandle.html
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[`array::from_ref`]: https://doc.rust-lang.org/stable/std/array/fn.from_ref.html
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[`slice::from_ref`]: https://doc.rust-lang.org/stable/std/slice/fn.from_ref.html
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[`intrinsics::copy`]: https://doc.rust-lang.org/stable/std/intrinsics/fn.copy.html
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[`intrinsics::copy_nonoverlapping`]: https://doc.rust-lang.org/stable/std/intrinsics/fn.copy_nonoverlapping.html
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[`<*const T>::copy_to`]: https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.copy_to
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[`<*const T>::copy_to_nonoverlapping`]: https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.copy_to_nonoverlapping
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[`<*mut T>::copy_to`]: https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.copy_to-1
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[`<*mut T>::copy_to_nonoverlapping`]: https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.copy_to_nonoverlapping-1
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[`<*mut T>::copy_from`]: https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.copy_from
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[`<*mut T>::copy_from_nonoverlapping`]: https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.copy_from_nonoverlapping
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[`str::from_utf8`]: https://doc.rust-lang.org/stable/std/str/fn.from_utf8.html
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[`Utf8Error::error_len`]: https://doc.rust-lang.org/stable/std/str/struct.Utf8Error.html#method.error_len
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[`Utf8Error::valid_up_to`]: https://doc.rust-lang.org/stable/std/str/struct.Utf8Error.html#method.valid_up_to
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[`Condvar::new`]: https://doc.rust-lang.org/stable/std/sync/struct.Condvar.html#method.new
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[`Mutex::new`]: https://doc.rust-lang.org/stable/std/sync/struct.Mutex.html#method.new
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[`RwLock::new`]: https://doc.rust-lang.org/stable/std/sync/struct.RwLock.html#method.new
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Version 1.62.1 (2022-07-19)
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==========================
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Rust 1.62.1 addresses a few recent regressions in the compiler and standard
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library, and also mitigates a CPU vulnerability on Intel SGX.
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* [The compiler fixed unsound function coercions involving `impl Trait` return types.][98608]
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* [The compiler fixed an incremental compilation bug with `async fn` lifetimes.][98890]
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* [Windows added a fallback for overlapped I/O in synchronous reads and writes.][98950]
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* [The `x86_64-fortanix-unknown-sgx` target added a mitigation for the
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MMIO stale data vulnerability][98126], advisory [INTEL-SA-00615].
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[98608]: https://github.com/rust-lang/rust/issues/98608
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[98890]: https://github.com/rust-lang/rust/issues/98890
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[98950]: https://github.com/rust-lang/rust/pull/98950
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[98126]: https://github.com/rust-lang/rust/pull/98126
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[INTEL-SA-00615]: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00615.html
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Version 1.62.0 (2022-06-30)
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Version 1.62.0 (2022-06-30)
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==========================
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==========================
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