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Commit 7737e0b

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Auto merge of #95639 - pietroalbini:pa-1.60.0-stable, r=pietroalbini
Prepare 1.60.0 stable release This PR bumps the channel to stable, and backports the following PRs: * Miscellaneous release notes updates. * #94817 * #95256 r? `@ghost`
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‎RELEASES.md

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Version 1.60.0 (2022年04月07日)
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==========================
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Language
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--------
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- [Stabilize `#[cfg(panic = "...")]` for either `"unwind"` or `"abort"`.][93658]
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- [Stabilize `#[cfg(target_has_atomic = "...")]` for each integer size and `"ptr"`.][93824]
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Compiler
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--------
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- [Enable combining `+crt-static` and `relocation-model=pic` on `x86_64-unknown-linux-gnu`][86374]
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- [Fixes wrong `unreachable_pub` lints on nested and glob public reexport][87487]
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- [Stabilize `-Z instrument-coverage` as `-C instrument-coverage`][90132]
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- [Stabilize `-Z print-link-args` as `--print link-args`][91606]
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- [Add new Tier 3 target `mips64-openwrt-linux-musl`\*][92300]
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- [Add new Tier 3 target `armv7-unknown-linux-uclibceabi` (softfloat)\*][92383]
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- [Fix invalid removal of newlines from doc comments][92357]
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- [Add kernel target for RustyHermit][92670]
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- [Deny mixing bin crate type with lib crate types][92933]
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- [Make rustc use `RUST_BACKTRACE=full` by default][93566]
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- [Upgrade to LLVM 14][93577]
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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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- [Guarantee call order for `sort_by_cached_key`][89621]
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- [Improve `Duration::try_from_secs_f32`/`f64` accuracy by directly processing exponent and mantissa][90247]
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- [Make `Instant::{duration_since, elapsed, sub}` saturating][89926]
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- [Remove non-monotonic clocks workarounds in `Instant::now`][89926]
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- [Make `BuildHasherDefault`, `iter::Empty` and `future::Pending` covariant][92630]
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Stabilized APIs
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---------------
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- [`Arc::new_cyclic`][arc_new_cyclic]
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- [`Rc::new_cyclic`][rc_new_cyclic]
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- [`slice::EscapeAscii`][slice_escape_ascii]
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- [`<[u8]>::escape_ascii`][slice_u8_escape_ascii]
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- [`u8::escape_ascii`][u8_escape_ascii]
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- [`Vec::spare_capacity_mut`][vec_spare_capacity_mut]
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- [`MaybeUninit::assume_init_drop`][assume_init_drop]
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- [`MaybeUninit::assume_init_read`][assume_init_read]
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- [`i8::abs_diff`][i8_abs_diff]
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- [`i16::abs_diff`][i16_abs_diff]
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- [`i32::abs_diff`][i32_abs_diff]
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- [`i64::abs_diff`][i64_abs_diff]
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- [`i128::abs_diff`][i128_abs_diff]
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- [`isize::abs_diff`][isize_abs_diff]
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- [`u8::abs_diff`][u8_abs_diff]
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- [`u16::abs_diff`][u16_abs_diff]
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- [`u32::abs_diff`][u32_abs_diff]
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- [`u64::abs_diff`][u64_abs_diff]
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- [`u128::abs_diff`][u128_abs_diff]
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- [`usize::abs_diff`][usize_abs_diff]
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- [`Display for io::ErrorKind`][display_error_kind]
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- [`From<u8> for ExitCode`][from_u8_exit_code]
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- [`Not for !` (the "never" type)][not_never]
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- [_Op_`Assign<$t> for Wrapping<$t>`][wrapping_assign_ops]
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- [`arch::is_aarch64_feature_detected!`][is_aarch64_feature_detected]
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Cargo
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-----
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- [Port cargo from `toml-rs` to `toml_edit`][cargo/10086]
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- [Stabilize `-Ztimings` as `--timings`][cargo/10245]
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- [Stabilize namespaced and weak dependency features.][cargo/10269]
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- [Accept more `cargo:rustc-link-arg-*` types from build script output.][cargo/10274]
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- [cargo-new should not add ignore rule on Cargo.lock inside subdirs][cargo/10379]
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Misc
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----
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- [Ship docs on Tier 2 platforms by reusing the closest Tier 1 platform docs][92800]
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- [Drop rustc-docs from complete profile][93742]
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- [bootstrap: tidy up flag handling for llvm build][93918]
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Compatibility Notes
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-------------------
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- [Remove compiler-rt linking hack on Android][83822]
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- [Mitigations for platforms with non-monotonic clocks have been removed from
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`Instant::now`][89926]. On platforms that don't provide monotonic clocks, an
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instant is not guaranteed to be greater than an earlier instant anymore.
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- [`Instant::{duration_since, elapsed, sub}` do not panic anymore on underflow,
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saturating to `0` instead][89926]. In the real world the panic happened mostly
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on platforms with buggy monotonic clock implementations rather than catching
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programming errors like reversing the start and end times. Such programming
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errors will now results in `0` rather than a panic.
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- In a future release we're planning to increase the baseline requirements for
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the Linux kernel to version 3.2, and for glibc to version 2.17. We'd love
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your feedback in [PR #95026][95026].
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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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- [Switch all libraries to the 2021 edition][92068]
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[83822]: https://github.com/rust-lang/rust/pull/83822
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[86374]: https://github.com/rust-lang/rust/pull/86374
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[87487]: https://github.com/rust-lang/rust/pull/87487
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[89621]: https://github.com/rust-lang/rust/pull/89621
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[89926]: https://github.com/rust-lang/rust/pull/89926
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[90132]: https://github.com/rust-lang/rust/pull/90132
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[90247]: https://github.com/rust-lang/rust/pull/90247
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[91606]: https://github.com/rust-lang/rust/pull/91606
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[92068]: https://github.com/rust-lang/rust/pull/92068
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[92300]: https://github.com/rust-lang/rust/pull/92300
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[92357]: https://github.com/rust-lang/rust/pull/92357
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[92383]: https://github.com/rust-lang/rust/pull/92383
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[92630]: https://github.com/rust-lang/rust/pull/92630
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[92670]: https://github.com/rust-lang/rust/pull/92670
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[92800]: https://github.com/rust-lang/rust/pull/92800
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[92933]: https://github.com/rust-lang/rust/pull/92933
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[93566]: https://github.com/rust-lang/rust/pull/93566
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[93577]: https://github.com/rust-lang/rust/pull/93577
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[93658]: https://github.com/rust-lang/rust/pull/93658
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[93742]: https://github.com/rust-lang/rust/pull/93742
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[93824]: https://github.com/rust-lang/rust/pull/93824
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[93918]: https://github.com/rust-lang/rust/pull/93918
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[95026]: https://github.com/rust-lang/rust/pull/95026
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[cargo/10086]: https://github.com/rust-lang/cargo/pull/10086
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[cargo/10245]: https://github.com/rust-lang/cargo/pull/10245
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[cargo/10269]: https://github.com/rust-lang/cargo/pull/10269
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[cargo/10274]: https://github.com/rust-lang/cargo/pull/10274
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[cargo/10379]: https://github.com/rust-lang/cargo/pull/10379
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[arc_new_cyclic]: https://doc.rust-lang.org/stable/std/sync/struct.Arc.html#method.new_cyclic
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[rc_new_cyclic]: https://doc.rust-lang.org/stable/std/rc/struct.Rc.html#method.new_cyclic
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[slice_escape_ascii]: https://doc.rust-lang.org/stable/std/slice/struct.EscapeAscii.html
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[slice_u8_escape_ascii]: https://doc.rust-lang.org/stable/std/primitive.slice.html#method.escape_ascii
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[u8_escape_ascii]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.escape_ascii
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[vec_spare_capacity_mut]: https://doc.rust-lang.org/stable/std/vec/struct.Vec.html#method.spare_capacity_mut
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[assume_init_drop]: https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#method.assume_init_drop
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[assume_init_read]: https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#method.assume_init_read
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[i8_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.i8.html#method.abs_diff
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[i16_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.i16.html#method.abs_diff
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[i32_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.i32.html#method.abs_diff
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[i64_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.i64.html#method.abs_diff
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[i128_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.i128.html#method.abs_diff
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[isize_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.isize.html#method.abs_diff
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[u8_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.abs_diff
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[u16_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.u16.html#method.abs_diff
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[u32_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.u32.html#method.abs_diff
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[u64_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.u64.html#method.abs_diff
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[u128_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.u128.html#method.abs_diff
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[usize_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.usize.html#method.abs_diff
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[display_error_kind]: https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#impl-Display
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[from_u8_exit_code]: https://doc.rust-lang.org/stable/std/process/struct.ExitCode.html#impl-From%3Cu8%3E
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[not_never]: https://doc.rust-lang.org/stable/std/primitive.never.html#impl-Not
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[wrapping_assign_ops]: https://doc.rust-lang.org/stable/std/num/struct.Wrapping.html#trait-implementations
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[is_aarch64_feature_detected]: https://doc.rust-lang.org/stable/std/arch/macro.is_aarch64_feature_detected.html
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Version 1.59.0 (2022年02月24日)
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==========================
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Language
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--------
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- [Stabilize default arguments for const parameters and remove the ordering restriction for type and const parameters][90207]
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- [Stabilize destructuring assignment][90521]
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- [Relax private in public lint on generic bounds and where clauses of trait impls][90586]
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- [Stabilize asm! and global_asm! for x86, x86_64, ARM, Aarch64, and RISC-V][91728]
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Compiler
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--------
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- [Stabilize new symbol mangling format, leaving it opt-in (-Csymbol-mangling-version=v0)][90128]
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- [Emit LLVM optimization remarks when enabled with `-Cremark`][90833]
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- [Fix sparc64 ABI for aggregates with floating point members][91003]
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- [Warn when a `#[test]`-like built-in attribute macro is present multiple times.][91172]
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- [Add support for riscv64gc-unknown-freebsd][91284]
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- [Stabilize `-Z emit-future-incompat` as `--json future-incompat`][91535]
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- [Soft disable incremental compilation][94124]
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This release disables incremental compilation, unless the user has explicitly
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opted in via the newly added RUSTC_FORCE_INCREMENTAL=1 environment variable.
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This is due to a known and relatively frequently occurring bug in incremental
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compilation, which causes builds to issue internal compiler errors. This
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particular bug is already fixed on nightly, but that fix has not yet rolled out
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to stable and is deemed too risky for a direct stable backport.
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As always, we encourage users to test with nightly and report bugs so that we
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can track failures and fix issues earlier.
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See [94124] for more details.
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[94124]: https://github.com/rust-lang/rust/issues/94124
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Libraries
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---------
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- [Remove unnecessary bounds for some Hash{Map,Set} methods][91593]
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Stabilized APIs
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---------------
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- [`std::thread::available_parallelism`][available_parallelism]
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- [`Result::copied`][result-copied]
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- [`Result::cloned`][result-cloned]
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- [`arch::asm!`][asm]
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- [`arch::global_asm!`][global_asm]
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- [`ops::ControlFlow::is_break`][is_break]
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- [`ops::ControlFlow::is_continue`][is_continue]
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- [`TryFrom<char> for u8`][try_from_char_u8]
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- [`char::TryFromCharError`][try_from_char_err]
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implementing `Clone`, `Debug`, `Display`, `PartialEq`, `Copy`, `Eq`, `Error`
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- [`iter::zip`][zip]
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- [`NonZeroU8::is_power_of_two`][is_power_of_two8]
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- [`NonZeroU16::is_power_of_two`][is_power_of_two16]
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- [`NonZeroU32::is_power_of_two`][is_power_of_two32]
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- [`NonZeroU64::is_power_of_two`][is_power_of_two64]
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- [`NonZeroU128::is_power_of_two`][is_power_of_two128]
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- [`NonZeroUsize::is_power_of_two`][is_power_of_two_usize]
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- [`DoubleEndedIterator for ToLowercase`][lowercase]
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- [`DoubleEndedIterator for ToUppercase`][uppercase]
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- [`TryFrom<&mut [T]> for [T; N]`][tryfrom_ref_arr]
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- [`UnwindSafe for Once`][unwindsafe_once]
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- [`RefUnwindSafe for Once`][refunwindsafe_once]
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- [armv8 neon intrinsics for aarch64][stdarch/1266]
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Const-stable:
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- [`mem::MaybeUninit::as_ptr`][muninit_ptr]
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- [`mem::MaybeUninit::assume_init`][muninit_init]
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- [`mem::MaybeUninit::assume_init_ref`][muninit_init_ref]
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- [`ffi::CStr::from_bytes_with_nul_unchecked`][cstr_from_bytes]
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Cargo
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-----
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- [Stabilize the `strip` profile option][cargo/10088]
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- [Stabilize future-incompat-report][cargo/10165]
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- [Support abbreviating `--release` as `-r`][cargo/10133]
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- [Support `term.quiet` configuration][cargo/10152]
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- [Remove `--host` from cargo {publish,search,login}][cargo/10145]
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Compatibility Notes
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-------------------
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- [Refactor weak symbols in std::sys::unix][90846]
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This may add new, versioned, symbols when building with a newer glibc, as the
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standard library uses weak linkage rather than dynamically attempting to load
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certain symbols at runtime.
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- [Deprecate crate_type and crate_name nested inside `#![cfg_attr]`][83744]
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This adds a future compatibility lint to supporting the use of cfg_attr
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wrapping either crate_type or crate_name specification within Rust files;
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it is recommended that users migrate to setting the equivalent command line
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flags.
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- [Remove effect of `#[no_link]` attribute on name resolution][92034]
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This may expose new names, leading to conflicts with preexisting names in a
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given namespace and a compilation failure.
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- [Cargo will document libraries before binaries.][cargo/10172]
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- [Respect doc=false in dependencies, not just the root crate][cargo/10201]
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- [Weaken guarantee around advancing underlying iterators in zip][83791]
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- [Make split_inclusive() on an empty slice yield an empty output][89825]
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- [Update std::env::temp_dir to use GetTempPath2 on Windows when available.][89999]
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- [unreachable! was updated to match other formatting macro behavior on Rust 2021][92137]
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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
267+
and related tools.
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- [Fix many cases of normalization-related ICEs][91255]
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- [Replace dominators algorithm with simple Lengauer-Tarjan][85013]
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- [Store liveness in interval sets for region inference][90637]
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- [Remove `in_band_lifetimes` from the compiler and standard library, in preparation for removing this
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unstable feature.][91867]
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[91867]: https://github.com/rust-lang/rust/issues/91867
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[83744]: https://github.com/rust-lang/rust/pull/83744/
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[83791]: https://github.com/rust-lang/rust/pull/83791/
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[85013]: https://github.com/rust-lang/rust/pull/85013/
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[89825]: https://github.com/rust-lang/rust/pull/89825/
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[89999]: https://github.com/rust-lang/rust/pull/89999/
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[90128]: https://github.com/rust-lang/rust/pull/90128/
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[90207]: https://github.com/rust-lang/rust/pull/90207/
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[90521]: https://github.com/rust-lang/rust/pull/90521/
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[90586]: https://github.com/rust-lang/rust/pull/90586/
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[90637]: https://github.com/rust-lang/rust/pull/90637/
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[90833]: https://github.com/rust-lang/rust/pull/90833/
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[90846]: https://github.com/rust-lang/rust/pull/90846/
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[91003]: https://github.com/rust-lang/rust/pull/91003/
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[91172]: https://github.com/rust-lang/rust/pull/91172/
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[91255]: https://github.com/rust-lang/rust/pull/91255/
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[91284]: https://github.com/rust-lang/rust/pull/91284/
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[91535]: https://github.com/rust-lang/rust/pull/91535/
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[91593]: https://github.com/rust-lang/rust/pull/91593/
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[91728]: https://github.com/rust-lang/rust/pull/91728/
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[91878]: https://github.com/rust-lang/rust/pull/91878/
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[91896]: https://github.com/rust-lang/rust/pull/91896/
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[91926]: https://github.com/rust-lang/rust/pull/91926/
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[91984]: https://github.com/rust-lang/rust/pull/91984/
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[92020]: https://github.com/rust-lang/rust/pull/92020/
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[92034]: https://github.com/rust-lang/rust/pull/92034/
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[92137]: https://github.com/rust-lang/rust/pull/92137/
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[92483]: https://github.com/rust-lang/rust/pull/92483/
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[cargo/10088]: https://github.com/rust-lang/cargo/pull/10088/
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[cargo/10133]: https://github.com/rust-lang/cargo/pull/10133/
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[cargo/10145]: https://github.com/rust-lang/cargo/pull/10145/
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[cargo/10152]: https://github.com/rust-lang/cargo/pull/10152/
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[cargo/10165]: https://github.com/rust-lang/cargo/pull/10165/
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[cargo/10172]: https://github.com/rust-lang/cargo/pull/10172/
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[cargo/10201]: https://github.com/rust-lang/cargo/pull/10201/
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[cargo/10269]: https://github.com/rust-lang/cargo/pull/10269/
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[cstr_from_bytes]: https://doc.rust-lang.org/stable/std/ffi/struct.CStr.html#method.from_bytes_with_nul_unchecked
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[muninit_ptr]: https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#method.as_ptr
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[muninit_init]: https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#method.assume_init
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[muninit_init_ref]: https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#method.assume_init_ref
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[unwindsafe_once]: https://doc.rust-lang.org/stable/std/sync/struct.Once.html#impl-UnwindSafe
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[refunwindsafe_once]: https://doc.rust-lang.org/stable/std/sync/struct.Once.html#impl-RefUnwindSafe
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[tryfrom_ref_arr]: https://doc.rust-lang.org/stable/std/convert/trait.TryFrom.html#impl-TryFrom%3C%26%27_%20mut%20%5BT%5D%3E
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[lowercase]: https://doc.rust-lang.org/stable/std/char/struct.ToLowercase.html#impl-DoubleEndedIterator
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[uppercase]: https://doc.rust-lang.org/stable/std/char/struct.ToUppercase.html#impl-DoubleEndedIterator
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[try_from_char_err]: https://doc.rust-lang.org/stable/std/char/struct.TryFromCharError.html
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[available_parallelism]: https://doc.rust-lang.org/stable/std/thread/fn.available_parallelism.html
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[result-copied]: https://doc.rust-lang.org/stable/std/result/enum.Result.html#method.copied
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[result-cloned]: https://doc.rust-lang.org/stable/std/result/enum.Result.html#method.cloned
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[asm]: https://doc.rust-lang.org/stable/core/arch/macro.asm.html
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[global_asm]: https://doc.rust-lang.org/stable/core/arch/macro.global_asm.html
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[is_break]: https://doc.rust-lang.org/stable/std/ops/enum.ControlFlow.html#method.is_break
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[is_continue]: https://doc.rust-lang.org/stable/std/ops/enum.ControlFlow.html#method.is_continue
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[try_from_char_u8]: https://doc.rust-lang.org/stable/std/primitive.char.html#impl-TryFrom%3Cchar%3E
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[zip]: https://doc.rust-lang.org/stable/std/iter/fn.zip.html
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[is_power_of_two8]: https://doc.rust-lang.org/stable/core/num/struct.NonZeroU8.html#method.is_power_of_two
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[is_power_of_two16]: https://doc.rust-lang.org/stable/core/num/struct.NonZeroU16.html#method.is_power_of_two
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[is_power_of_two32]: https://doc.rust-lang.org/stable/core/num/struct.NonZeroU32.html#method.is_power_of_two
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[is_power_of_two64]: https://doc.rust-lang.org/stable/core/num/struct.NonZeroU64.html#method.is_power_of_two
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[is_power_of_two128]: https://doc.rust-lang.org/stable/core/num/struct.NonZeroU128.html#method.is_power_of_two
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[is_power_of_two_usize]: https://doc.rust-lang.org/stable/core/num/struct.NonZeroUsize.html#method.is_power_of_two
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[stdarch/1266]: https://github.com/rust-lang/stdarch/pull/1266
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Version 1.58.1 (2022年01月19日)
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===========================
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@@ -876,7 +1215,7 @@ Version 1.52.1 (2021年05月10日)
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This release disables incremental compilation, unless the user has explicitly
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opted in via the newly added RUSTC_FORCE_INCREMENTAL=1 environment variable.
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This is due to the widespread, and frequently occuring, breakage encountered by
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This is due to the widespread, and frequently occurring, breakage encountered by
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Rust users due to newly enabled incremental verification in 1.52.0. Notably,
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Rust users **should** upgrade to 1.52.0 or 1.52.1: the bugs that are detected by
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newly added incremental verification are still present in past stable versions,

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