| Version | Change log |
| Rust 1.91.0 Oct 30, 2025 |
Language: Lower pattern bindings in the order they're written and base drop order on primary bindings' order Stabilize declaration of C-style variadic functions for sysv64, win64, efiapi, and aapcs ABIs. This brings these ABIs in line with the C ABI: variadic functions can be declared in extern blocks but not defined. Add dangling_pointers_from_locals lint to warn against dangling pointers from local variables Upgrade semicolon_in_expressions_from_macros from warn to deny Stabilize LoongArch32 inline assembly Add warn-by-default integer_to_ptr_transmutes lint against integer-to-pointer transmutes Stabilize sse4a and tbm target features Add target_env = "macabi" and target_env = "sim" cfgs as replacements for the target_abi cfgs with the same values. Compiler: Don't warn on never-to-any as casts as unreachable Platform Support: Promote aarch64-pc-windows-gnullvm and x86_64-pc-windows-gnullvm to Tier 2 with host tools. Note: llvm-tools and MSI installers are missing but will be added in future releases. Promote aarch64-pc-windows-msvc to Tier 1 Refer to Rust's platform support page for more information on Rust's tiered platform support. Libraries: Print thread ID in panic message Fix overly restrictive lifetime in core::panic::Location::file return type Guarantee parameter order for _by() variants of min / max/ minmax in std::cmp Document assumptions about Clone and Eq traits std::thread: Return error if setting thread stack size fails This used to panic within the standard library. Stabilized APIs: Path::file_prefix AtomicPtr::fetch_ptr_add AtomicPtr::fetch_ptr_sub AtomicPtr::fetch_byte_add AtomicPtr::fetch_byte_sub AtomicPtr::fetch_or AtomicPtr::fetch_and AtomicPtr::fetch_xor {integer}::strict_add {integer}::strict_sub {integer}::strict_mul {integer}::strict_div {integer}::strict_div_euclid {integer}::strict_rem {integer}::strict_rem_euclid {integer}::strict_neg {integer}::strict_shl {integer}::strict_shr {integer}::strict_pow i{N}::strict_add_un |
| Rust 1.90.0 Oct 9, 2025 |
Language: Stabilize explicitly inferred const arguments (feature(generic_arg_infer)) Add a warn-by-default mismatched_lifetime_syntaxes lint. This lint detects when the same lifetime is referred to by different syntax categories between function arguments and return values, which can be confusing to read, especially in unsafe code. This lint supersedes the warn-by-default elided_named_lifetimes lint. Expand unpredictable_function_pointer_comparisons to also lint on function pointer comparisons in external macros Make the dangerous_implicit_autorefs lint deny-by-default Stabilize the avx512 target features Stabilize kl and widekl target features for x86 Stabilize sha512, sm3 and sm4 target features for x86 Stabilize LoongArch target features f, d, frecipe, lasx, lbt, lsx, and lvz Remove i128 and u128 from improper_ctypes_definitions Stabilize repr128 (#[repr(u128)], #[repr(i128)]) Allow #![doc(test(attr(..)))] everywhere Extend temporary lifetime extension to also go through tuple struct and tuple variant constructors extern "C" functions on the wasm32-unknown-unknown target now have a standards compliant ABI Compiler: Default to non-leaf frame pointers on aarch64-linux Enable non-leaf frame pointers for Arm64EC Windows Set Apple frame pointers by architecture Platform Support: Add new Tier-3 targets loongarch32-unknown-none and loongarch32-unknown-none-softfloat x86_64-apple-darwin is in the process of being demoted to Tier 2 with host tools Libraries: Specify the base path for file! Allow storing format_args!() in a variable Add #[must_use] to [T; N]::map Implement DerefMut for Lazy{Cell,Lock} Implement Default for array::IntoIter Implement Clone for slice::ChunkBy Implement io::Seek for io::Take Stabilized APIs: NonZero<char> Many intrinsics for x86, not enumerated here AVX512 intrinsics SHA512, SM3 and SM4 intrinsics File::lock File::lock_shared File::try_lock File::try_lock_shared File::unlock NonNull::from_ref NonNull::from_mut NonNull::without_ |
| Rust 1.88.0 Jun 27, 2025 |
Language: Stabilize #![feature(let_chains)] in the 2024 edition. This feature allows &&-chaining let statements inside if and while, allowing intermixture with boolean expressions. The patterns inside the let sub-expressions can be irrefutable or refutable. Stabilize #![feature(naked_functions)]. Naked functions allow writing functions with no compiler-generated epilogue and prologue, allowing full control over the generated assembly for a particular function. Stabilize #![feature(cfg_boolean_literals)]. This allows using boolean literals as cfg predicates, e.g. #[cfg(true)] and #[cfg(false)]. Fully de-stabilize the #[bench] attribute. Usage of #[bench] without #![feature(custom_test_frameworks)] already triggered a deny-by-default future-incompatibility lint since Rust 1.77, but will now become a hard error. Add warn-by-default dangerous_implicit_autorefs lint against implicit autoref of raw pointer dereference. The lint will be bumped to deny-by-default in the next version of Rust. Add invalid_null_arguments lint to prevent invalid usage of null pointers. This lint is uplifted from clippy::invalid_null_ptr_usage. Change trait impl candidate preference for builtin impls and trivial where-clauses. Check types of generic const parameter defaults Compiler: Stabilize -Cdwarf-version for selecting the version of DWARF debug information to generate. Platform Support: Demote i686-pc-windows-gnu to Tier 2. Refer to Rust's platform support page for more information on Rust's tiered platform support. Libraries: Remove backticks from #[should_panic] test failure message. Guarantee that [T; N]::from_fn is generated in order of increasing indices., for those passing it a stateful closure. The libtest flag --nocapture is deprecated in favor of the more consistent --no-capture flag. Guarantee that {float}::NAN is a quiet NaN. Stabilized APIs: Cell::update impl Default for *const T impl Default for *mut T HashMap::extract_if HashSet::extract_if proc_macro::Span::line proc_macro::S |
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