Auto merge of #107260 - Mark-Simulacrum:stable-next, r=Mark-Simulacrum
[stable] 1.67.0 release No end of cycle backports this time. r? `@Mark-Simulacrum`
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RELEASES.md
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RELEASES.md
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Version 1.67.0 (2023-01-26)
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==========================
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<a id="1.67.0-Language"></a>
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Language
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--------
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- [Make `Sized` predicates coinductive, allowing cycles.](https://github.com/rust-lang/rust/pull/100386/)
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- [`#[must_use]` annotations on `async fn` also affect the `Future::Output`.](https://github.com/rust-lang/rust/pull/100633/)
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- [Elaborate supertrait obligations when deducing closure signatures.](https://github.com/rust-lang/rust/pull/101834/)
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- [Invalid literals are no longer an error under `cfg(FALSE)`.](https://github.com/rust-lang/rust/pull/102944/)
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- [Unreserve braced enum variants in value namespace.](https://github.com/rust-lang/rust/pull/103578/)
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<a id="1.67.0-Compiler"></a>
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Compiler
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--------
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- [Enable varargs support for calling conventions other than `C` or `cdecl`.](https://github.com/rust-lang/rust/pull/97971/)
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- [Add new MIR constant propagation based on dataflow analysis.](https://github.com/rust-lang/rust/pull/101168/)
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- [Optimize field ordering by grouping m\*2^n-sized fields with equivalently aligned ones.](https://github.com/rust-lang/rust/pull/102750/)
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- [Stabilize native library modifier `verbatim`.](https://github.com/rust-lang/rust/pull/104360/)
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Added and removed targets:
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- [Add a tier 3 target for PowerPC on AIX](https://github.com/rust-lang/rust/pull/102293/), `powerpc64-ibm-aix`.
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- [Add a tier 3 target for the Sony PlayStation 1](https://github.com/rust-lang/rust/pull/102689/), `mipsel-sony-psx`.
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- [Add tier 3 `no_std` targets for the QNX Neutrino RTOS](https://github.com/rust-lang/rust/pull/102701/),
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`aarch64-unknown-nto-qnx710` and `x86_64-pc-nto-qnx710`.
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- [Remove tier 3 `linuxkernel` targets](https://github.com/rust-lang/rust/pull/104015/) (not used by the actual kernel).
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Refer to Rust's [platform support page][platform-support-doc]
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for more information on Rust's tiered platform support.
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<a id="1.67.0-Libraries"></a>
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Libraries
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---------
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- [Merge `crossbeam-channel` into `std::sync::mpsc`.](https://github.com/rust-lang/rust/pull/93563/)
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- [Fix inconsistent rounding of 0.5 when formatted to 0 decimal places.](https://github.com/rust-lang/rust/pull/102935/)
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- [Derive `Eq` and `Hash` for `ControlFlow`.](https://github.com/rust-lang/rust/pull/103084/)
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- [Don't build `compiler_builtins` with `-C panic=abort`.](https://github.com/rust-lang/rust/pull/103786/)
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<a id="1.67.0-Stabilized-APIs"></a>
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Stabilized APIs
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---------------
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- [`{integer}::checked_ilog`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.checked_ilog)
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- [`{integer}::checked_ilog2`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.checked_ilog2)
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- [`{integer}::checked_ilog10`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.checked_ilog10)
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- [`{integer}::ilog`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.ilog)
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- [`{integer}::ilog2`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.ilog2)
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- [`{integer}::ilog10`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.ilog10)
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- [`NonZeroU*::ilog2`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroU32.html#method.ilog2)
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- [`NonZeroU*::ilog10`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroU32.html#method.ilog10)
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- [`NonZero*::BITS`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroU32.html#associatedconstant.BITS)
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These APIs are now stable in const contexts:
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- [`char::from_u32`](https://doc.rust-lang.org/stable/std/primitive.char.html#method.from_u32)
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- [`char::from_digit`](https://doc.rust-lang.org/stable/std/primitive.char.html#method.from_digit)
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- [`char::to_digit`](https://doc.rust-lang.org/stable/std/primitive.char.html#method.to_digit)
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- [`core::char::from_u32`](https://doc.rust-lang.org/stable/core/char/fn.from_u32.html)
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- [`core::char::from_digit`](https://doc.rust-lang.org/stable/core/char/fn.from_digit.html)
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<a id="1.67.0-Compatibility-Notes"></a>
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Compatibility Notes
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-------------------
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- [The layout of `repr(Rust)` types now groups m\*2^n-sized fields with
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equivalently aligned ones.](https://github.com/rust-lang/rust/pull/102750/)
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This is intended to be an optimization, but it is also known to increase type
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sizes in a few cases for the placement of enum tags. As a reminder, the layout
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of `repr(Rust)` types is an implementation detail, subject to change.
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- [0.5 now rounds to 0 when formatted to 0 decimal places.](https://github.com/rust-lang/rust/pull/102935/)
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This makes it consistent with the rest of floating point formatting that
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rounds ties toward even digits.
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- [Chains of `&&` and `||` will now drop temporaries from their sub-expressions in
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evaluation order, left-to-right.](https://github.com/rust-lang/rust/pull/103293/)
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Previously, it was "twisted" such that the _first_ expression dropped its
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temporaries _last_, after all of the other expressions dropped in order.
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- [Underscore suffixes on string literals are now a hard error.](https://github.com/rust-lang/rust/pull/103914/)
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This has been a future-compatibility warning since 1.20.0.
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- [Stop passing `-export-dynamic` to `wasm-ld`.](https://github.com/rust-lang/rust/pull/105405/)
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- [`main` is now mangled as `__main_void` on `wasm32-wasi`.](https://github.com/rust-lang/rust/pull/105468/)
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- [Cargo now emits an error if there are multiple registries in the configuration
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with the same index URL.](https://github.com/rust-lang/cargo/pull/10592)
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<a id="1.67.0-Internal-Changes"></a>
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Internal Changes
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----------------
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These changes do not affect any public interfaces of Rust, but they represent
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significant improvements to the performance or internals of rustc and related
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tools.
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- [Rewrite LLVM's archive writer in Rust.](https://github.com/rust-lang/rust/pull/97485/)
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Version 1.66.1 (2023-01-10)
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===========================
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- Added validation of SSH host keys for git URLs in Cargo ([CVE-2022-46176](https://www.cve.org/CVERecord?id=CVE-2022-46176))
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Version 1.66.0 (2022-12-15)
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==========================
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Language
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--------
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- [Permit specifying explicit discriminants on all `repr(Int)` enums](https://github.com/rust-lang/rust/pull/95710/)
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```rust
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#[repr(u8)]
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enum Foo {
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A(u8) = 0,
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B(i8) = 1,
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C(bool) = 42,
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}
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```
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- [Allow transmutes between the same type differing only in lifetimes](https://github.com/rust-lang/rust/pull/101520/)
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- [Change constant evaluation errors from a deny-by-default lint to a hard error](https://github.com/rust-lang/rust/pull/102091/)
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- [Trigger `must_use` on `impl Trait` for supertraits](https://github.com/rust-lang/rust/pull/102287/)
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This makes `impl ExactSizeIterator` respect the existing `#[must_use]` annotation on `Iterator`.
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- [Allow `..=X` in patterns](https://github.com/rust-lang/rust/pull/102275/)
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- [Uplift `clippy::for_loops_over_fallibles` lint into rustc](https://github.com/rust-lang/rust/pull/99696/)
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- [Stabilize `sym` operands in inline assembly](https://github.com/rust-lang/rust/pull/103168/)
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- [Update to Unicode 15](https://github.com/rust-lang/rust/pull/101912/)
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- [Opaque types no longer imply lifetime bounds](https://github.com/rust-lang/rust/pull/95474/)
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This is a soundness fix which may break code that was erroneously relying on this behavior.
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Compiler
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--------
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- [Add armv5te-none-eabi and thumbv5te-none-eabi tier 3 targets](https://github.com/rust-lang/rust/pull/101329/)
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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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- [Add support for linking against macOS universal libraries](https://github.com/rust-lang/rust/pull/98736)
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Libraries
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---------
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- [Fix `#[derive(Default)]` on a generic `#[default]` enum adding unnecessary `Default` bounds](https://github.com/rust-lang/rust/pull/101040/)
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- [Update to Unicode 15](https://github.com/rust-lang/rust/pull/101821/)
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Stabilized APIs
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---------------
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- [`proc_macro::Span::source_text`](https://doc.rust-lang.org/stable/proc_macro/struct.Span.html#method.source_text)
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- [`uX::{checked_add_signed, overflowing_add_signed, saturating_add_signed, wrapping_add_signed}`](https://doc.rust-lang.org/stable/std/primitive.u8.html#method.checked_add_signed)
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- [`iX::{checked_add_unsigned, overflowing_add_unsigned, saturating_add_unsigned, wrapping_add_unsigned}`](https://doc.rust-lang.org/stable/std/primitive.i8.html#method.checked_add_unsigned)
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- [`iX::{checked_sub_unsigned, overflowing_sub_unsigned, saturating_sub_unsigned, wrapping_sub_unsigned}`](https://doc.rust-lang.org/stable/std/primitive.i8.html#method.checked_sub_unsigned)
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- [`BTreeSet::{first, last, pop_first, pop_last}`](https://doc.rust-lang.org/stable/std/collections/struct.BTreeSet.html#method.first)
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- [`BTreeMap::{first_key_value, last_key_value, first_entry, last_entry, pop_first, pop_last}`](https://doc.rust-lang.org/stable/std/collections/struct.BTreeMap.html#method.first_key_value)
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- [Add `AsFd` implementations for stdio lock types on WASI.](https://github.com/rust-lang/rust/pull/101768/)
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- [`impl TryFrom<Vec<T>> for Box<[T; N]>`](https://doc.rust-lang.org/stable/std/boxed/struct.Box.html#impl-TryFrom%3CVec%3CT%2C%20Global%3E%3E-for-Box%3C%5BT%3B%20N%5D%2C%20Global%3E)
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- [`core::hint::black_box`](https://doc.rust-lang.org/stable/std/hint/fn.black_box.html)
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- [`Duration::try_from_secs_{f32,f64}`](https://doc.rust-lang.org/stable/std/time/struct.Duration.html#method.try_from_secs_f32)
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- [`Option::unzip`](https://doc.rust-lang.org/stable/std/option/enum.Option.html#method.unzip)
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- [`std::os::fd`](https://doc.rust-lang.org/stable/std/os/fd/index.html)
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Rustdoc
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-------
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- [Add Rustdoc warning for invalid HTML tags in the documentation](https://github.com/rust-lang/rust/pull/101720/)
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Cargo
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-----
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- [Added `cargo remove` to remove dependencies from Cargo.toml](https://doc.rust-lang.org/nightly/cargo/commands/cargo-remove.html)
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- [`cargo publish` now waits for the new version to be downloadable before exiting](https://github.com/rust-lang/cargo/pull/11062)
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See [detailed release notes](https://github.com/rust-lang/cargo/blob/master/CHANGELOG.md#cargo-166-2022-12-15) for more.
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Compatibility Notes
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-------------------
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- [Only apply `ProceduralMasquerade` hack to older versions of `rental`](https://github.com/rust-lang/rust/pull/94063/)
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- [Don't export `__heap_base` and `__data_end` on wasm32-wasi.](https://github.com/rust-lang/rust/pull/102385/)
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- [Don't export `__wasm_init_memory` on WebAssembly.](https://github.com/rust-lang/rust/pull/102426/)
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- [Only export `__tls_*` on wasm32-unknown-unknown.](https://github.com/rust-lang/rust/pull/102440/)
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- [Don't link to `libresolv` in libstd on Darwin](https://github.com/rust-lang/rust/pull/102766/)
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- [Update libstd's libc to 0.2.135 (to make `libstd` no longer pull in `libiconv.dylib` on Darwin)](https://github.com/rust-lang/rust/pull/103277/)
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- [Opaque types no longer imply lifetime bounds](https://github.com/rust-lang/rust/pull/95474/)
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This is a soundness fix which may break code that was erroneously relying on this behavior.
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- [Make `order_dependent_trait_objects` show up in future-breakage reports](https://github.com/rust-lang/rust/pull/102635/)
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- [Change std::process::Command spawning to default to inheriting the parent's signal mask](https://github.com/rust-lang/rust/pull/101077/)
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Internal Changes
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----------------
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These changes do not affect any public interfaces of Rust, but they represent
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significant improvements to the performance or internals of rustc and related
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tools.
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- [Enable BOLT for LLVM compilation](https://github.com/rust-lang/rust/pull/94381/)
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- [Enable LTO for rustc_driver.so](https://github.com/rust-lang/rust/pull/101403/)
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Version 1.65.0 (2022-11-03)
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==========================
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@ -1 +1 @@
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beta
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stable
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