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<h1 id="rust-新版解读--169--cargo-fix"><a class="header" href="#rust-新版解读--169--cargo-fix">Rust 新版解读 | 1.69 | cargo fix</a></h1>
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<blockquote>
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<p>Rust 1.69 官方 release doc: <a href="https://blog.rust-lang.org/2023/04/20/Rust-1.69.0.html">Announcing Rust 1.69.0 | Rust Blog</a></p>
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</blockquote>
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<p>通过 <a href="https://www.rust-lang.org/tools/install">rustup</a> 安装的同学可以使用以下命令升级到 1.69 版本:</p>
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<pre><code class="language-shell">$ rustup update stable
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</code></pre>
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<h2 id="cargo-提供自动修复建议"><a class="header" href="#cargo-提供自动修复建议">Cargo 提供自动修复建议</a></h2>
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<p>在 Rust 1.29.0 版本添加的 <code>cargo fix</code> 子命令，能够自动修复一些简单的编译错误。从那以后，能够自动修复的错误/警告原因的数量一直在稳步增加。此外，还增加了对自动修复一些简单的 Clippy 警告的支持。</p>
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<p>为了让更多人注意到这些能力，现在当检测到可自动修复的错误时，Cargo 会建议运行 <code>cargo fix</code> 或 <code>cargo clippy --fix</code> 命令：</p>
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<pre><code class="language-shell">warning: unused import: `std::hash::Hash`
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--> src/main.rs:1:5
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1 | use std::hash::Hash;
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| ^^^^^^^^^^^^^^^
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= note: `#[warn(unused_imports)]` on by default
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warning: `foo` (bin "foo") generated 1 warning (run `cargo fix --bin "foo"` to apply 1 suggestion)
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</code></pre>
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<p>注意上面的完整命令（即包含 <code>--bin foo</code>）仅在你想要精确修复一个单独的 crate 时需要附上。默认执行 workspace 下所有 fixs 只需要 <code>cargo fix</code> 。</p>
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<h2 id="构建脚本默认不再包含调试信息"><a class="header" href="#构建脚本默认不再包含调试信息">构建脚本默认不再包含调试信息</a></h2>
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<p>为了提高编译速度，Cargo 现在默认避免在构建脚本中发出调试信息。构建脚本成功执行时不会有可见的效果，但构建脚本中的回溯（backtraces）将包含更少的信息。</p>
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<p>所以如果想要 debug 构建脚本，需要额外开启调试信息，在 <code>Cargo.toml</code> 文件里添加</p>
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<pre><code class="language-text">[profile.dev.build-override]
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debug = true
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[profile.release.build-override]
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debug = true
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</code></pre>
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<h2 id="others"><a class="header" href="#others">Others</a></h2>
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<p>其它更新细节，和稳定的API列表，参考<a href="https://blog.rust-lang.org/2023/04/20/Rust-1.69.0.html#stabilized-apis">原Blog</a></p>
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