chore: bump up Rust to v1.97.1 (#15389)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [rust](https://rust-lang.org/)
([source](https://redirect.github.com/rust-lang/rust),
[changelog](https://redirect.github.com/rust-lang/rust/blob/main/RELEASES.md))
| toolchain | minor | `1.96.0` → `1.97.1` |

---

### Release Notes

<details>
<summary>rust-lang/rust (rust)</summary>

###
[`v1.97.1`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1971-2026-07-16)

[Compare
Source](https://redirect.github.com/rust-lang/rust/compare/1.97.0...1.97.1)

\==========================

<a id="1.97.1"></a>

- [rustc: Fix miscompilation in LLVM
optimization](https://redirect.github.com/rust-lang/rust/issues/159035)
This backports an LLVM submodule bump to include the LLVM-side fix and a
revert of the rustc change that is one known trigger for the bug. The
rustc
side revert should not be strictly necessary but is done out of
abundance of caution.

###
[`v1.97.0`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1970-2026-07-09)

[Compare
Source](https://redirect.github.com/rust-lang/rust/compare/1.96.1...1.97.0)

\==========================

<a id="1.97.0-Language"></a>

## Language

- [Consider `Result<T, Uninhabited>` and `ControlFlow<Uninhabited, T>`
to be equivalent to `T` for must use
lint](https://redirect.github.com/rust-lang/rust/pull/148214)
- [Add allow-by-default `dead_code_pub_in_binary` lint for unused pub
items in binary
crates](https://redirect.github.com/rust-lang/rust/pull/149509)
- [Stabilize the `div32`, `lam-bh`, `lamcas`, `ld-seq-sa` and `scq`
target features](https://redirect.github.com/rust-lang/rust/pull/154510)
- [Stabilize
`cfg(target_has_atomic_primitive_alignment)`](https://redirect.github.com/rust-lang/rust/pull/155006)
- [Allow trailing `self` in imports in more
cases](https://redirect.github.com/rust-lang/rust/pull/155137)

<a id="1.97.0-Platform-Support"></a>

## Platform Support

- [nvptx64-nvidia-cuda: drop support for old architectures and old
ISAs](https://redirect.github.com/rust-lang/rust/pull/152443)

Refer to Rust's [platform support page][platform-support-doc]
for more information on Rust's tiered platform support.

[platform-support-doc]:
https://doc.rust-lang.org/rustc/platform-support.html

<a id="1.97.0-Stabilized-APIs"></a>

## Stabilized APIs

- [`Default for
RepeatN`](https://doc.rust-lang.org/stable/std/iter/struct.RepeatN.html#impl-Default-for-RepeatN%3CA%3E)
- [`Copy for
ffi::FromBytesUntilNulError`](https://doc.rust-lang.org/stable/std/ffi/struct.FromBytesUntilNulError.html#impl-Copy-for-FromBytesUntilNulError)
- [`Send for std::fs::File` on
UEFI](https://redirect.github.com/rust-lang/rust/pull/154003)
-
[`<{integer}>::isolate_highest_one`](https://doc.rust-lang.org/stable/std/primitive.u32.html#method.isolate_highest_one)
-
[`<{integer}>::isolate_lowest_one`](https://doc.rust-lang.org/stable/std/primitive.u32.html#method.isolate_lowest_one)
-
[`<{integer}>::highest_one`](https://doc.rust-lang.org/stable/std/primitive.u32.html#method.highest_one)
-
[`<{integer}>::lowest_one`](https://doc.rust-lang.org/stable/std/primitive.u32.html#method.lowest_one)
-
[`<{integer}>::bit_width`](https://doc.rust-lang.org/stable/std/primitive.u32.html#method.bit_width)
-
[`NonZero<{integer}>::isolate_highest_one`](https://doc.rust-lang.org/stable/std/num/struct.NonZero.html#method.isolate_highest_one)
-
[`NonZero<{integer}>::isolate_lowest_one`](https://doc.rust-lang.org/stable/std/num/struct.NonZero.html#method.isolate_lowest_one)
-
[`NonZero<{integer}>::highest_one`](https://doc.rust-lang.org/stable/std/num/struct.NonZero.html#method.highest_one)
-
[`NonZero<{integer}>::lowest_one`](https://doc.rust-lang.org/stable/std/num/struct.NonZero.html#method.lowest_one)
-
[`NonZero<{integer}>::bit_width`](https://doc.rust-lang.org/stable/std/num/struct.NonZero.html#method.bit_width)

These previously stable APIs are now stable in const contexts:

-
[`char::is_control`](https://doc.rust-lang.org/stable/std/primitive.char.html#method.is_control)

<a id="1.97.0-Cargo"></a>

## Cargo

- [Stabilize `build.warnings`
config.](https://redirect.github.com/rust-lang/cargo/pull/16796) This
controls how lint warnings from local packages are treated. Useful for
enforcing a warning-free build in CI, replacing `-Dwarnings`.
[docs](https://doc.rust-lang.org/nightly/cargo/reference/config.html#buildwarnings)
- [Stabilize `resolver.lockfile-path`
config.](https://redirect.github.com/rust-lang/cargo/pull/16694) This
allows specifying the path to the lockfile to use when resolving
dependencies. Useful when working with read-only source directories.
[docs](https://doc.rust-lang.org/nightly/cargo/reference/config.html#resolverlockfile-path)
- [cargo-clean: Error when `--target-dir` doesn't look like a Cargo
target
directory.](https://redirect.github.com/rust-lang/cargo/pull/16712) This
prevents accidental deletion of non-target directories.
- [Add `-m` shorthand for
`--manifest-path`](https://redirect.github.com/rust-lang/cargo/pull/16858)
- [Remove `curl` dependency from `crates-io`
crate](https://redirect.github.com/rust-lang/cargo/pull/16936)

<a id="1.97.0-Rustdoc"></a>

## Rustdoc

- [Stabilize `--emit`
flag](https://redirect.github.com/rust-lang/rust/pull/146220)
- [Stabilize
`--remap-path-prefix`](https://redirect.github.com/rust-lang/rust/pull/155307)

<a id="1.97.0-Compatibility-Notes"></a>

## Compatibility Notes

- [Emit a future-compatibility warning when relying on `f32:
From<{float}>` to constrain
`{float}`](https://redirect.github.com/rust-lang/rust/pull/139087)
- [Rust will use the v0 symbol mangling scheme by
default.](https://redirect.github.com/rust-lang/rust/pull/151994) This
may cause some tools (such as debuggers or profilers, especially with
old versions) to fail to demangle symbols emitted by Rust. It may also
cause the formatting of text in backtraces to change.
- [Prevent deref coercions in `pin!`, in order to prevent
unsoundness.](https://redirect.github.com/rust-lang/rust/pull/153457)
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.
- [Deprecate `std::char` constants and
functions](https://redirect.github.com/rust-lang/rust/pull/153873)
- [Warn on linker output by
default](https://redirect.github.com/rust-lang/rust/pull/153968)
- [Remove hidden `f64` methods which have been deprecated since
1.0](https://redirect.github.com/rust-lang/rust/pull/153975)
- [report the `varargs_without_pattern` lint in
deps](https://redirect.github.com/rust-lang/rust/pull/154599)
- [Forbid passing generic arguments to module path segments even if the
module reexports a generic enum
variant](https://redirect.github.com/rust-lang/rust/pull/154971)
- [Error on invalid macho `link_section`
specifier](https://redirect.github.com/rust-lang/rust/pull/155065)
- The encoding of certain `enum`s [have
changed](https://redirect.github.com/rust-lang/rust/pull/155473). This
is not a breaking change, as it only applies to `enum`s without layout
guarantees, but is noted here as we've seen people impacted from having
made assumptions about the layout algorithm.
- [Error on `#[export_name = "..."]` where the name is
empty](https://redirect.github.com/rust-lang/rust/pull/155515)
- [Syntactically reject tuple index shorthands in struct
patterns](https://redirect.github.com/rust-lang/rust/pull/155698)
- [validate `#[link_name = "..."]` & `#[link(name = "...")]`
parameters](https://redirect.github.com/rust-lang/rust/pull/155817)
- 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`](https://redirect.github.com/rust-lang/rust/pull/156063)

###
[`v1.96.1`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1961-2026-06-30)

[Compare
Source](https://redirect.github.com/rust-lang/rust/compare/1.96.0...1.96.1)

\===========================

<a id="1.96.1"></a>

- [Cargo: fix timeout/retry
behavior](https://redirect.github.com/rust-lang/cargo/pull/17131)
- [Cargo: apply patches for CVE-2025-15661, CVE-2026-55199, and
CVE-2026-55200 to
libssh2](https://redirect.github.com/rust-lang/cargo/pull/17140)
- [rustc: fix miscompilation in MIR
optimization](https://redirect.github.com/rust-lang/rust/pull/158214)

</details>

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rust-toolchain.toml

@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.96.0"
+channel = "1.97.1"
 profile = "default"