Rust release · May 28, 2026

Rust 1.96: what's new, what was stabilized

Short answerRust 1.96 was released on May 28, 2026: 11 newly stable APIs (assert_matches!, debug_assert_matches!, From<T> for AssertUnwindSafe<T>, From<T> for LazyCell<T, F>, ...); 14 compatibility notes that can affect existing code. Point release: 1.96.1 (Jun 30, 2026).

May 28, 2026release date

0language stabilizations

11APIs stabilized

-new edition

← Rust 1.95 All versions Rust 1.97 →

11 APIs stabilized

assert_matches!, debug_assert_matches!, From<T> for AssertUnwindSafe<T>, From<T> for LazyCell<T, F>, From<T> for LazyLock<T, F>, core::range::RangeToInclusive, core::range::RangeToInclusiveIter, core::range::RangeFrom, core::range::RangeFromIter, core::range::Range, core::range::RangeIter

Can it break my build?

The release lists these compatibility notes. Most only affect rare code, but read them before you raise your toolchain in CI:

[Fix layout of #[repr(Int)] enums in some edge cases involving fields of uninhabited zero-sized types](https://github.com/rust-lang/rust/pull/146989)
Prevent unsize-coercing into Pin<Foo> where Foo doesn't implement Deref. Some such coercions were previously allowed, but produce a type with no useful public API.
rustc: Stop passing --allow-undefined on wasm targets
[Gate the accidentally stabilized #![reexport_test_harness_main] attribute](https://github.com/rust-lang/rust/pull/152210)
Error on return-position-impl-trait-in-traits whose types are too private
Report the uninhabited_static lint in dependencies and make it deny-by-default
Distributed builds now contain non-split debuginfo for windows-gnu
Check const generic arguments are correctly typed in more positions
Remove -Csoft-float
[Importing structs with ::{self [as name]}, e.g., struct S {}; use S::{self as Other};, is now no longer permitted because {self} imports require a module parent.](https://github.com/rust-lang/rust/pull/152996)
For export_name, link_name, and link_section attributes, if multiple of the same attribute is present, the first one now takes precedence.
Update the minimum external LLVM to 21
On avr targets, C's double type is 32-bit by default, so change c_double to f32 on avr targets to match. This is a breaking change, but necessary to make c_double match C's double.
BTreeMap::append() was optimized, which may now cause panics for types with incorrect Ord impls

Use it

rustup update stable        # get the newest release
rustup install 1.96          # or exactly this one
rustup override set 1.96     # pin a project to it

To require at least this version from users of your crate, set rust-version = "1.96" under [package] in Cargo.toml. Cargo then refuses to build it on older compilers with a clear message, and with resolver 3 (the default on the 2024 edition, Rust 1.85+) it also prefers dependency versions that support it.

Full release notes

Language

Compiler

Libraries

Stabilized APIs

Cargo

Allow a dependency to specify both a git repository and an alternate registry. Just like with crates.io, the git repository will be used locally, but the registry version will be used when published.
Added target.'cfg(..)'.rustdocflags support in configuration.
Fixed CVE-2026-5222 and CVE-2026-5223.

Rustdoc

Deprecation notes are now rendered like any other documentation. Previously they used the css white-space: pre-wrap; property and stripped any <p> elements from the rendered html, however this caused issues and unintuitive behavior. The new behavior should be more predictable, however some multi-line deprecation notes will now be rendered as as single lines. If this is undesirable, you can use the standard markdown method of forcing a linebreak, which is two spaces followed by a newline ("\n").
Don't emit rustdoc missing_doc_code_examples lint on impl items
Separate methods and associated functions in sidebar

Compatibility Notes

[Fix layout of #[repr(Int)] enums in some edge cases involving fields of uninhabited zero-sized types](https://github.com/rust-lang/rust/pull/146989)
Prevent unsize-coercing into Pin<Foo> where Foo doesn't implement Deref. Some such coercions were previously allowed, but produce a type with no useful public API.
rustc: Stop passing --allow-undefined on wasm targets
[Gate the accidentally stabilized #![reexport_test_harness_main] attribute](https://github.com/rust-lang/rust/pull/152210)
Error on return-position-impl-trait-in-traits whose types are too private
Report the uninhabited_static lint in dependencies and make it deny-by-default
Distributed builds now contain non-split debuginfo for windows-gnu This appears to improve the quality of backtraces. This change has no effect on the defaults for the output of rustc/cargo on these targets.
Check const generic arguments are correctly typed in more positions
Remove -Csoft-float
[Importing structs with ::{self [as name]}, e.g., struct S {}; use S::{self as Other};, is now no longer permitted because {self} imports require a module parent.](https://github.com/rust-lang/rust/pull/152996)
For export_name, link_name, and link_section attributes, if multiple of the same attribute is present, the first one now takes precedence.
Update the minimum external LLVM to 21
On avr targets, C's double type is 32-bit by default, so change c_double to f32 on avr targets to match. This is a breaking change, but necessary to make c_double match C's double.
BTreeMap::append() was optimized, which may now cause panics for types with incorrect Ord impls

Internal Changes

These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools.

1.96.1 (Jun 30, 2026)

Release notes from the Rust project's RELEASES.md (MIT or Apache-2.0); summaries above are ours.