NOTE: Use the 📝 links to edit those that have a relnotes-tracking-issue,
and they will be updated when we regenerate the notes periodically (manually).

Version 1.97.0 (2026-07-09)

Language

• Fallback {float} to f32 in some cases
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• Consider Result<T, Uninhabited> and ControlFlow<Uninhabited, T> to be equivalent to T for must use lint
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• Stabilize the div32, lam-bh, lamcas, ld-seq-sa and scq target features
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• stabilize cfg(target_has_atomic_primitive_alignment)
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• Allow trailing self in imports in more cases
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Compiler

• Rust will use the v0 symbol mangling scheme by default
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Platform Support

• NVPTX: Drop support for old architectures and old ISAs
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Refer to Rust's platform support page
for more information on Rust's tiered platform support.

Libraries

Stabilized APIs

• Default for RepeatN
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• Copy for ffi::FromBytesUntilNulError
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• Send for std::fs::File on UEFI
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• <{integer}>::isolate_highest_one
• <{integer}>::isolate_lowest_one
• NonZero<{integer}>::isolate_highest_one
• NonZero<{integer}>::isolate_lowest_one
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• <{integer}>::bit_width
• NonZero<{integer}>::bit_width
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• NonZero<{integer}>::highest_one
• NonZero<{integer}>::lowest_one
• <{integer}>::lowest_one
• <{integer}>::highest_one
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These previously stable APIs are now stable in const contexts:

• char::is_control
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Cargo

• feat(config): Stabilize resolver.lockfile-path config
• cargo clean: Add target directory validation
• feat(compile): Stabilize build.warnings
• Add -m shorthand for --manifest-path
• Remove curl dependency from crates-io crate

Rustdoc

• Stabilize --emit flag
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• Stabilize --remap-path-prefix
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Compatibility Notes

• Lint unused pub items in binary crates
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• Prevent deref coercions in pin!, in order to prevent unsoundness. The most likely case where this might impact users is: writing pin!(x) where x has type &mut T will now always correctly produce a value of type Pin<&mut &mut T>, instead of sometimes allowing a coercion that produces a value of type Pin<&mut T>. This coercion was previously incorrectly allowed since Rust 1.88.0.
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• deprecate std::char constants and functions
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• Warn on linker output by default
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• Remove hidden f64 methods which have been deprecated since 1.0
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• report the varargs_without_pattern lint in deps
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• Forbid passing generic arguments to module path segments even if the module reexports a generic enum variant
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• Error on invalid macho link_section specifier
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• The encoding of certain enums have changed. This is not a breaking change, as it only applies to enums without layout guarantees, but is noted here as we've seen people impacted from having made assumptions about the layout algorithm.
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• Error on #[export_name = "..."] where the name is empty
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• Syntactically reject tuple index shorthands in struct patterns
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• validate #[link_name = "..."] & #[link(name = "...")] parameters
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• On Windows, after calling shutdown on a socket to shut down the write side, attempting to write to the socket will now produce a BrokenPipe error rather than Other. Map WSAESHUTDOWN to io::ErrorKind::BrokenPipe
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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.