* Change Rust toolchain channel to stable
Signed-off-by: houseme <housemecn@gmail.com>
* style: apply clippy --fix and cargo fix lint suggestions
Run `cargo clippy --fix --all-targets --all-features` and
`cargo fix --lib --all-targets` across the workspace, then resolve the
remaining warnings by hand:
- collapse needless borrows in `format!` args, prefer `?` over explicit
early returns, and use `.values()` / `.flatten()` iterator adapters
- rewrite the `Md5` scan loop via `manual_flatten` and re-indent the
`select!` macro body (rustfmt skips macro interiors)
- annotate the intentional dead-code `Md5` inherent methods (constructed
only by the test factory) with `#[allow(dead_code)]`
Behavior is unchanged.
Co-Authored-By: heihutu <heihutu@gmail.com>
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Signed-off-by: houseme <housemecn@gmail.com>
Co-authored-by: heihutu <heihutu@gmail.com>