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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="The `Error` type, a wrapper around a dynamic error type."><title>Error in anyhow - Rust</title><script> if (window.location.protocol !== "file:") document.write(`<link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin 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href="../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc struct"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../anyhow/index.html">anyhow</a><span class="version">1.0.82</span></h2></div><h2 class="location"><a href="#">Error</a></h2><div class="sidebar-elems"><section><h3><a href="#implementations">Methods</a></h3><ul class="block method"><li><a href="#method.backtrace">backtrace</a></li><li><a href="#method.chain">chain</a></li><li><a href="#method.context">context</a></li><li><a href="#method.downcast">downcast</a></li><li><a href="#method.downcast_mut">downcast_mut</a></li><li><a href="#method.downcast_ref">downcast_ref</a></li><li><a href="#method.is">is</a></li><li><a href="#method.msg">msg</a></li><li><a href="#method.new">new</a></li><li><a href="#method.root_cause">root_cause</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block trait-implementation"><li><a href="#impl-AsRef%3Cdyn+Error+%2B+Send+%2B+Sync%3E-for-Error">AsRef<dyn Error + Send + Sync></a></li><li><a href="#impl-AsRef%3Cdyn+Error%3E-for-Error">AsRef<dyn Error></a></li><li><a href="#impl-Debug-for-Error">Debug</a></li><li><a href="#impl-Deref-for-Error">Deref</a></li><li><a href="#impl-DerefMut-for-Error">DerefMut</a></li><li><a href="#impl-Display-for-Error">Display</a></li><li><a href="#impl-Drop-for-Error">Drop</a></li><li><a href="#impl-From%3CE%3E-for-Error">From<E></a></li><li><a href="#impl-From%3CError%3E-for-Box%3Cdyn+Error%3E">From<Error></a></li><li><a href="#impl-From%3CError%3E-for-Box%3Cdyn+Error+%2B+Send%3E">From<Error></a></li><li><a href="#impl-From%3CError%3E-for-Box%3Cdyn+Error+%2B+Send+%2B+Sync%3E">From<Error></a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block synthetic-implementation"><li><a href="#impl-Freeze-for-Error">Freeze</a></li><li><a href="#impl-RefUnwindSafe-for-Error">RefUnwindSafe</a></li><li><a href="#impl-Send-for-Error">Send</a></li><li><a href="#impl-Sync-for-Error">Sync</a></li><li><a href="#impl-Unpin-for-Error">Unpin</a></li><li><a href="#impl-UnwindSafe-for-Error">UnwindSafe</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block blanket-implementation"><li><a href="#impl-Any-for-T">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-T">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-T">BorrowMut<T></a></li><li><a href="#impl-From%3C!%3E-for-T">From<!></a></li><li><a href="#impl-From%3CT%3E-for-T">From<T></a></li><li><a href="#impl-Into%3CU%3E-for-T">Into<U></a></li><li><a href="#impl-ToString-for-T">ToString</a></li><li><a href="#impl-TryFrom%3CU%3E-for-T">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E-for-T">TryInto<U></a></li></ul></section><h2><a href="index.html">In crate anyhow</a></h2></div></nav><div class="sidebar-resizer"></div>
|
||
<main><div class="width-limiter"><nav class="sub"><form class="search-form"><span></span><div id="sidebar-button" tabindex="-1"><a href="../anyhow/all.html" title="show sidebar"></a></div><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" tabindex="-1"><a href="../help.html" title="help">?</a></div><div id="settings-menu" tabindex="-1"><a href="../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1>Struct <a href="index.html">anyhow</a>::<wbr><a class="struct" href="#">Error</a><button id="copy-path" title="Copy item path to clipboard"><img src="../static.files/clipboard-7571035ce49a181d.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="src" href="../src/anyhow/lib.rs.html#387-389">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>−</span>]</button></span></div><pre class="rust item-decl"><code>pub struct Error { <span class="comment">/* private fields */</span> }</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>The <code>Error</code> type, a wrapper around a dynamic error type.</p>
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<p><code>Error</code> works a lot like <code>Box<dyn std::error::Error></code>, but with these
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differences:</p>
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<ul>
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<li><code>Error</code> requires that the error is <code>Send</code>, <code>Sync</code>, and <code>'static</code>.</li>
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<li><code>Error</code> guarantees that a backtrace is available, even if the underlying
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error type does not provide one.</li>
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<li><code>Error</code> is represented as a narrow pointer — exactly one word in
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size instead of two.</li>
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</ul>
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<br>
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<h2 id="display-representations"><a class="doc-anchor" href="#display-representations">§</a>Display representations</h2>
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<p>When you print an error object using “{}” or to_string(), only the outermost
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underlying error or context is printed, not any of the lower level causes.
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This is exactly as if you had called the Display impl of the error from
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which you constructed your anyhow::Error.</p>
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<div class="example-wrap"><pre class="language-console"><code>Failed to read instrs from ./path/to/instrs.json
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</code></pre></div>
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<p>To print causes as well using anyhow’s default formatting of causes, use the
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alternate selector “{:#}”.</p>
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<div class="example-wrap"><pre class="language-console"><code>Failed to read instrs from ./path/to/instrs.json: No such file or directory (os error 2)
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</code></pre></div>
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<p>The Debug format “{:?}” includes your backtrace if one was captured. Note
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that this is the representation you get by default if you return an error
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from <code>fn main</code> instead of printing it explicitly yourself.</p>
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<div class="example-wrap"><pre class="language-console"><code>Error: Failed to read instrs from ./path/to/instrs.json
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Caused by:
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No such file or directory (os error 2)
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</code></pre></div>
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<p>and if there is a backtrace available:</p>
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<div class="example-wrap"><pre class="language-console"><code>Error: Failed to read instrs from ./path/to/instrs.json
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Caused by:
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No such file or directory (os error 2)
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Stack backtrace:
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0: <E as anyhow::context::ext::StdError>::ext_context
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at /git/anyhow/src/backtrace.rs:26
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1: core::result::Result<T,E>::map_err
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at /git/rustc/src/libcore/result.rs:596
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2: anyhow::context::<impl anyhow::Context<T,E> for core::result::Result<T,E>>::with_context
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at /git/anyhow/src/context.rs:58
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3: testing::main
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at src/main.rs:5
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4: std::rt::lang_start
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at /git/rustc/src/libstd/rt.rs:61
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5: main
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6: __libc_start_main
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7: _start
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</code></pre></div>
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<p>To see a conventional struct-style Debug representation, use “{:#?}”.</p>
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<div class="example-wrap"><pre class="language-console"><code>Error {
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context: "Failed to read instrs from ./path/to/instrs.json",
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source: Os {
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code: 2,
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kind: NotFound,
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message: "No such file or directory",
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},
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}
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</code></pre></div>
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<p>If none of the built-in representations are appropriate and you would prefer
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to render the error and its cause chain yourself, it can be done something
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like this:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>anyhow::{Context, <span class="prelude-ty">Result</span>};
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<span class="kw">fn </span>main() {
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<span class="kw">if let </span><span class="prelude-val">Err</span>(err) = try_main() {
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<span class="macro">eprintln!</span>(<span class="string">"ERROR: {}"</span>, err);
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err.chain().skip(<span class="number">1</span>).for_each(|cause| <span class="macro">eprintln!</span>(<span class="string">"because: {}"</span>, cause));
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std::process::exit(<span class="number">1</span>);
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}
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}
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<span class="kw">fn </span>try_main() -> <span class="prelude-ty">Result</span><()> {
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...
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}</code></pre></div>
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</div></details><h2 id="implementations" class="section-header">Implementations<a href="#implementations" class="anchor">§</a></h2><div id="implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-Error" class="impl"><a class="src rightside" href="../src/anyhow/error.rs.html#20-555">source</a><a href="#impl-Error" class="anchor">§</a><h3 class="code-header">impl <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.new" class="method"><a class="src rightside" href="../src/anyhow/error.rs.html#32-38">source</a><h4 class="code-header">pub fn <a href="#method.new" class="fn">new</a><E>(error: E) -> Self<div class="where">where
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E: <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/error/trait.Error.html" title="trait core::error::Error">StdError</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h4></section></summary><div class="docblock"><p>Create a new error object from any error type.</p>
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<p>The error type must be threadsafe and <code>'static</code>, so that the <code>Error</code>
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will be as well.</p>
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<p>If the error type does not provide a backtrace, a backtrace will be
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created here to ensure that a backtrace exists.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.msg" class="method"><a class="src rightside" href="../src/anyhow/error.rs.html#79-84">source</a><h4 class="code-header">pub fn <a href="#method.msg" class="fn">msg</a><M>(message: M) -> Self<div class="where">where
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M: <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h4></section></summary><div class="docblock"><p>Create a new error object from a printable error message.</p>
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<p>If the argument implements std::error::Error, prefer <code>Error::new</code>
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instead which preserves the underlying error’s cause chain and
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backtrace. If the argument may or may not implement std::error::Error
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now or in the future, use <code>anyhow!(err)</code> which handles either way
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correctly.</p>
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<p><code>Error::msg("...")</code> is equivalent to <code>anyhow!("...")</code> but occasionally
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||
convenient in places where a function is preferable over a macro, such
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as iterator or stream combinators:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>anyhow::{Error, <span class="prelude-ty">Result</span>};
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<span class="kw">use </span>futures::stream::{Stream, StreamExt, TryStreamExt};
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||
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<span class="kw">async fn </span>demo<S>(stream: S) -> <span class="prelude-ty">Result</span><Vec<Output>>
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<span class="kw">where
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</span>S: Stream<Item = Input>,
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{
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stream
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.then(ffi::do_some_work) <span class="comment">// returns Result<Output, &str>
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</span>.map_err(Error::msg)
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.try_collect()
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.<span class="kw">await
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</span>}</code></pre></div>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.context" class="method"><a class="src rightside" href="../src/anyhow/error.rs.html#316-347">source</a><h4 class="code-header">pub fn <a href="#method.context" class="fn">context</a><C>(self, context: C) -> Self<div class="where">where
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C: <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h4></section></summary><div class="docblock"><p>Wrap the error value with additional context.</p>
|
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<p>For attaching context to a <code>Result</code> as it is propagated, the
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<a href="trait.Context.html" title="trait anyhow::Context"><code>Context</code></a> extension trait may be more convenient than
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||
this function.</p>
|
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<p>The primary reason to use <code>error.context(...)</code> instead of
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<code>result.context(...)</code> via the <code>Context</code> trait would be if the context
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||
needs to depend on some data held by the underlying error:</p>
|
||
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>anyhow::Result;
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<span class="kw">use </span>std::fs::File;
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<span class="kw">use </span>std::path::Path;
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<span class="kw">struct </span>ParseError {
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line: usize,
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column: usize,
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}
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<span class="kw">fn </span>parse_impl(file: File) -> <span class="prelude-ty">Result</span><T, ParseError> {
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...
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}
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<span class="kw">pub fn </span>parse(path: <span class="kw">impl </span>AsRef<Path>) -> <span class="prelude-ty">Result</span><T> {
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<span class="kw">let </span>file = File::open(<span class="kw-2">&</span>path)<span class="question-mark">?</span>;
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parse_impl(file).map_err(|error| {
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<span class="kw">let </span>context = <span class="macro">format!</span>(
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<span class="string">"only the first {} lines of {} are valid"</span>,
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error.line, path.as_ref().display(),
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);
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anyhow::Error::new(error).context(context)
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||
})
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||
}</code></pre></div>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.backtrace" class="method"><a class="src rightside" href="../src/anyhow/error.rs.html#377-379">source</a><h4 class="code-header">pub fn <a href="#method.backtrace" class="fn">backtrace</a>(&self) -> &<a class="struct" href="https://doc.rust-lang.org/1.78.0/std/backtrace/struct.Backtrace.html" title="struct std::backtrace::Backtrace">Backtrace</a></h4></section></summary><div class="docblock"><p>Get the backtrace for this Error.</p>
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<p>In order for the backtrace to be meaningful, one of the two environment
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variables <code>RUST_LIB_BACKTRACE=1</code> or <code>RUST_BACKTRACE=1</code> must be defined
|
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and <code>RUST_LIB_BACKTRACE</code> must not be <code>0</code>. Backtraces are somewhat
|
||
expensive to capture in Rust, so we don’t necessarily want to be
|
||
capturing them all over the place all the time.</p>
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<ul>
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<li>If you want panics and errors to both have backtraces, set
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<code>RUST_BACKTRACE=1</code>;</li>
|
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<li>If you want only errors to have backtraces, set
|
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<code>RUST_LIB_BACKTRACE=1</code>;</li>
|
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<li>If you want only panics to have backtraces, set <code>RUST_BACKTRACE=1</code> and
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<code>RUST_LIB_BACKTRACE=0</code>.</li>
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</ul>
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<h5 id="stability"><a class="doc-anchor" href="#stability">§</a>Stability</h5>
|
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<p>Standard library backtraces are only available when using Rust ≥
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1.65. On older compilers, this function is only available if the crate’s
|
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“backtrace” feature is enabled, and will use the <code>backtrace</code> crate as
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||
the underlying backtrace implementation. The return type of this
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||
function on old compilers is <code>&(impl Debug + Display)</code>.</p>
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<div class="example-wrap"><pre class="language-toml"><code>[dependencies]
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||
anyhow = { version = "1.0", features = ["backtrace"] }
|
||
</code></pre></div></div></details><details class="toggle method-toggle" open><summary><section id="method.chain" class="method"><a class="src rightside" href="../src/anyhow/error.rs.html#405-407">source</a><h4 class="code-header">pub fn <a href="#method.chain" class="fn">chain</a>(&self) -> <a class="struct" href="struct.Chain.html" title="struct anyhow::Chain">Chain</a><'_> <a href="#" class="tooltip" data-notable-ty="Chain<'_>">ⓘ</a></h4></section></summary><div class="docblock"><p>An iterator of the chain of source errors contained by this Error.</p>
|
||
<p>This iterator will visit every error in the cause chain of this error
|
||
object, beginning with the error that this error object was created
|
||
from.</p>
|
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<h5 id="example"><a class="doc-anchor" href="#example">§</a>Example</h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>anyhow::Error;
|
||
<span class="kw">use </span>std::io;
|
||
|
||
<span class="kw">pub fn </span>underlying_io_error_kind(error: <span class="kw-2">&</span>Error) -> <span class="prelude-ty">Option</span><io::ErrorKind> {
|
||
<span class="kw">for </span>cause <span class="kw">in </span>error.chain() {
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(io_error) = cause.downcast_ref::<io::Error>() {
|
||
<span class="kw">return </span><span class="prelude-val">Some</span>(io_error.kind());
|
||
}
|
||
}
|
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<span class="prelude-val">None
|
||
</span>}</code></pre></div>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.root_cause" class="method"><a class="src rightside" href="../src/anyhow/error.rs.html#416-418">source</a><h4 class="code-header">pub fn <a href="#method.root_cause" class="fn">root_cause</a>(&self) -> &(dyn <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/error/trait.Error.html" title="trait core::error::Error">StdError</a> + 'static)</h4></section></summary><div class="docblock"><p>The lowest level cause of this error — this error’s cause’s
|
||
cause’s cause etc.</p>
|
||
<p>The root cause is the last error in the iterator produced by
|
||
<a href="struct.Error.html#method.chain" title="method anyhow::Error::chain"><code>chain()</code></a>.</p>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.is" class="method"><a class="src rightside" href="../src/anyhow/error.rs.html#428-433">source</a><h4 class="code-header">pub fn <a href="#method.is" class="fn">is</a><E>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.78.0/std/primitive.bool.html">bool</a><div class="where">where
|
||
E: <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h4></section></summary><div class="docblock"><p>Returns true if <code>E</code> is the type held by this error object.</p>
|
||
<p>For errors with context, this method returns true if <code>E</code> matches the
|
||
type of the context <code>C</code> <strong>or</strong> the type of the error on which the
|
||
context has been attached. For details about the interaction between
|
||
context and downcasting, <a href="trait.Context.html#effect-on-downcasting">see here</a>.</p>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.downcast" class="method"><a class="src rightside" href="../src/anyhow/error.rs.html#436-468">source</a><h4 class="code-header">pub fn <a href="#method.downcast" class="fn">downcast</a><E>(self) -> <a class="enum" href="https://doc.rust-lang.org/1.78.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><E, Self><div class="where">where
|
||
E: <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h4></section></summary><div class="docblock"><p>Attempt to downcast the error object to a concrete type.</p>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.downcast_ref" class="method"><a class="src rightside" href="../src/anyhow/error.rs.html#506-517">source</a><h4 class="code-header">pub fn <a href="#method.downcast_ref" class="fn">downcast_ref</a><E>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.78.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/1.78.0/std/primitive.reference.html">&E</a>><div class="where">where
|
||
E: <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h4></section></summary><div class="docblock"><p>Downcast this error object by reference.</p>
|
||
<h5 id="example-1"><a class="doc-anchor" href="#example-1">§</a>Example</h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="comment">// If the error was caused by redaction, then return a tombstone instead
|
||
// of the content.
|
||
</span><span class="kw">match </span>root_cause.downcast_ref::<DataStoreError>() {
|
||
<span class="prelude-val">Some</span>(DataStoreError::Censored(<span class="kw">_</span>)) => <span class="prelude-val">Ok</span>(Poll::Ready(REDACTED_CONTENT)),
|
||
<span class="prelude-val">None </span>=> <span class="prelude-val">Err</span>(error),
|
||
}</code></pre></div>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.downcast_mut" class="method"><a class="src rightside" href="../src/anyhow/error.rs.html#520-538">source</a><h4 class="code-header">pub fn <a href="#method.downcast_mut" class="fn">downcast_mut</a><E>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/1.78.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/1.78.0/std/primitive.reference.html">&mut E</a>><div class="where">where
|
||
E: <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h4></section></summary><div class="docblock"><p>Downcast this error object by mutable reference.</p>
|
||
</div></details></div></details></div><h2 id="trait-implementations" class="section-header">Trait Implementations<a href="#trait-implementations" class="anchor">§</a></h2><div id="trait-implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-AsRef%3Cdyn+Error%3E-for-Error" class="impl"><a class="src rightside" href="../src/anyhow/error.rs.html#1020-1024">source</a><a href="#impl-AsRef%3Cdyn+Error%3E-for-Error" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.AsRef.html" title="trait core::convert::AsRef">AsRef</a><dyn <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/error/trait.Error.html" title="trait core::error::Error">Error</a>> for <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.as_ref" class="method trait-impl"><a class="src rightside" href="../src/anyhow/error.rs.html#1021-1023">source</a><a href="#method.as_ref" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/convert/trait.AsRef.html#tymethod.as_ref" class="fn">as_ref</a>(&self) -> &(dyn <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/error/trait.Error.html" title="trait core::error::Error">StdError</a> + 'static)</h4></section></summary><div class='docblock'>Converts this type into a shared reference of the (usually inferred) input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-AsRef%3Cdyn+Error+%2B+Send+%2B+Sync%3E-for-Error" class="impl"><a class="src rightside" href="../src/anyhow/error.rs.html#1013-1017">source</a><a href="#impl-AsRef%3Cdyn+Error+%2B+Send+%2B+Sync%3E-for-Error" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.AsRef.html" title="trait core::convert::AsRef">AsRef</a><dyn <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/error/trait.Error.html" title="trait core::error::Error">Error</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>> for <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.as_ref-1" class="method trait-impl"><a class="src rightside" href="../src/anyhow/error.rs.html#1014-1016">source</a><a href="#method.as_ref-1" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/convert/trait.AsRef.html#tymethod.as_ref" class="fn">as_ref</a>(&self) -> &(dyn <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/error/trait.Error.html" title="trait core::error::Error">StdError</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static)</h4></section></summary><div class='docblock'>Converts this type into a shared reference of the (usually inferred) input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Debug-for-Error" class="impl"><a class="src rightside" href="../src/anyhow/error.rs.html#594-598">source</a><a href="#impl-Debug-for-Error" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl"><a class="src rightside" href="../src/anyhow/error.rs.html#595-597">source</a><a href="#method.fmt" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Debug.html#tymethod.fmt" class="fn">fmt</a>(&self, formatter: &mut <a class="struct" href="https://doc.rust-lang.org/1.78.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/1.78.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Deref-for-Error" class="impl"><a class="src rightside" href="../src/anyhow/error.rs.html#572-578">source</a><a href="#impl-Deref-for-Error" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/ops/deref/trait.Deref.html" title="trait core::ops::deref::Deref">Deref</a> for <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Target" class="associatedtype trait-impl"><a href="#associatedtype.Target" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.78.0/core/ops/deref/trait.Deref.html#associatedtype.Target" class="associatedtype">Target</a> = dyn <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/error/trait.Error.html" title="trait core::error::Error">Error</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a></h4></section></summary><div class='docblock'>The resulting type after dereferencing.</div></details><details class="toggle method-toggle" open><summary><section id="method.deref" class="method trait-impl"><a class="src rightside" href="../src/anyhow/error.rs.html#575-577">source</a><a href="#method.deref" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/ops/deref/trait.Deref.html#tymethod.deref" class="fn">deref</a>(&self) -> &Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.78.0/core/ops/deref/trait.Deref.html#associatedtype.Target" title="type core::ops::deref::Deref::Target">Target</a></h4></section></summary><div class='docblock'>Dereferences the value.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-DerefMut-for-Error" class="impl"><a class="src rightside" href="../src/anyhow/error.rs.html#582-586">source</a><a href="#impl-DerefMut-for-Error" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/ops/deref/trait.DerefMut.html" title="trait core::ops::deref::DerefMut">DerefMut</a> for <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.deref_mut" class="method trait-impl"><a class="src rightside" href="../src/anyhow/error.rs.html#583-585">source</a><a href="#method.deref_mut" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/ops/deref/trait.DerefMut.html#tymethod.deref_mut" class="fn">deref_mut</a>(&mut self) -> &mut Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.78.0/core/ops/deref/trait.Deref.html#associatedtype.Target" title="type core::ops::deref::Deref::Target">Target</a></h4></section></summary><div class='docblock'>Mutably dereferences the value.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Display-for-Error" class="impl"><a class="src rightside" href="../src/anyhow/error.rs.html#588-592">source</a><a href="#impl-Display-for-Error" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> for <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.fmt-1" class="method trait-impl"><a class="src rightside" href="../src/anyhow/error.rs.html#589-591">source</a><a href="#method.fmt-1" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Display.html#tymethod.fmt" class="fn">fmt</a>(&self, formatter: &mut <a class="struct" href="https://doc.rust-lang.org/1.78.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/1.78.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Display.html#tymethod.fmt">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Drop-for-Error" class="impl"><a class="src rightside" href="../src/anyhow/error.rs.html#600-607">source</a><a href="#impl-Drop-for-Error" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/ops/drop/trait.Drop.html" title="trait core::ops::drop::Drop">Drop</a> for <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.drop" class="method trait-impl"><a class="src rightside" href="../src/anyhow/error.rs.html#601-606">source</a><a href="#method.drop" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/ops/drop/trait.Drop.html#tymethod.drop" class="fn">drop</a>(&mut self)</h4></section></summary><div class='docblock'>Executes the destructor for this type. <a href="https://doc.rust-lang.org/1.78.0/core/ops/drop/trait.Drop.html#tymethod.drop">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3CE%3E-for-Error" class="impl"><a class="src rightside" href="../src/anyhow/error.rs.html#559-568">source</a><a href="#impl-From%3CE%3E-for-Error" class="anchor">§</a><h3 class="code-header">impl<E> <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><E> for <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a><div class="where">where
|
||
E: <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/error/trait.Error.html" title="trait core::error::Error">StdError</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-3" class="method trait-impl"><a class="src rightside" href="../src/anyhow/error.rs.html#564-567">source</a><a href="#method.from-3" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(error: E) -> Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3CError%3E-for-Box%3Cdyn+Error%3E" class="impl"><a class="src rightside" href="../src/anyhow/error.rs.html#1006-1010">source</a><a href="#impl-From%3CError%3E-for-Box%3Cdyn+Error%3E" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><<a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a>> for <a class="struct" href="https://doc.rust-lang.org/1.78.0/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><dyn <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/error/trait.Error.html" title="trait core::error::Error">StdError</a> + 'static></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from" class="method trait-impl"><a class="src rightside" href="../src/anyhow/error.rs.html#1007-1009">source</a><a href="#method.from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(error: <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a>) -> Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3CError%3E-for-Box%3Cdyn+Error+%2B+Send%3E" class="impl"><a class="src rightside" href="../src/anyhow/error.rs.html#1000-1004">source</a><a href="#impl-From%3CError%3E-for-Box%3Cdyn+Error+%2B+Send%3E" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><<a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a>> for <a class="struct" href="https://doc.rust-lang.org/1.78.0/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><dyn <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/error/trait.Error.html" title="trait core::error::Error">StdError</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + 'static></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-2" class="method trait-impl"><a class="src rightside" href="../src/anyhow/error.rs.html#1001-1003">source</a><a href="#method.from-2" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(error: <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a>) -> Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3CError%3E-for-Box%3Cdyn+Error+%2B+Send+%2B+Sync%3E" class="impl"><a class="src rightside" href="../src/anyhow/error.rs.html#988-998">source</a><a href="#impl-From%3CError%3E-for-Box%3Cdyn+Error+%2B+Send+%2B+Sync%3E" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><<a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a>> for <a class="struct" href="https://doc.rust-lang.org/1.78.0/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><dyn <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/error/trait.Error.html" title="trait core::error::Error">StdError</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-1" class="method trait-impl"><a class="src rightside" href="../src/anyhow/error.rs.html#990-997">source</a><a href="#method.from-1" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(error: <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a>) -> Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details></div><h2 id="synthetic-implementations" class="section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor">§</a></h2><div id="synthetic-implementations-list"><section id="impl-Freeze-for-Error" class="impl"><a href="#impl-Freeze-for-Error" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Freeze.html" title="trait core::marker::Freeze">Freeze</a> for <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a></h3></section><section id="impl-RefUnwindSafe-for-Error" class="impl"><a href="#impl-RefUnwindSafe-for-Error" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a></h3></section><section id="impl-Send-for-Error" class="impl"><a href="#impl-Send-for-Error" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a></h3></section><section id="impl-Sync-for-Error" class="impl"><a href="#impl-Sync-for-Error" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a></h3></section><section id="impl-Unpin-for-Error" class="impl"><a href="#impl-Unpin-for-Error" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a></h3></section><section id="impl-UnwindSafe-for-Error" class="impl"><a href="#impl-UnwindSafe-for-Error" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.Error.html" title="struct anyhow::Error">Error</a></h3></section></div><h2 id="blanket-implementations" class="section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor">§</a></h2><div id="blanket-implementations-list"><details class="toggle implementors-toggle"><summary><section id="impl-Any-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/core/any.rs.html#140">source</a><a href="#impl-Any-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T<div class="where">where
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T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/core/any.rs.html#141">source</a><a href="#method.type_id" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/any/trait.Any.html#tymethod.type_id" class="fn">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/1.78.0/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></h4></section></summary><div class='docblock'>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/1.78.0/core/any/trait.Any.html#tymethod.type_id">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/core/borrow.rs.html#208">source</a><a href="#impl-Borrow%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T<div class="where">where
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/core/borrow.rs.html#210">source</a><a href="#method.borrow" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/borrow/trait.Borrow.html#tymethod.borrow" class="fn">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.78.0/std/primitive.reference.html">&T</a></h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.78.0/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/core/borrow.rs.html#216">source</a><a href="#impl-BorrowMut%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T<div class="where">where
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/core/borrow.rs.html#217">source</a><a href="#method.borrow_mut" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fn">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/1.78.0/std/primitive.reference.html">&mut T</a></h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.78.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-From%3C!%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#782">source</a><a href="#impl-From%3C!%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><<a class="primitive" href="https://doc.rust-lang.org/1.78.0/std/primitive.never.html">!</a>> for T</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-5" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#783">source</a><a href="#method.from-5" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(t: <a class="primitive" href="https://doc.rust-lang.org/1.78.0/std/primitive.never.html">!</a>) -> T</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#765">source</a><a href="#impl-From%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for T</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-4" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#768">source</a><a href="#method.from-4" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(t: T) -> T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p>
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</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#748-750">source</a><a href="#impl-Into%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#758">source</a><a href="#method.into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/convert/trait.Into.html#tymethod.into" class="fn">into</a>(self) -> U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p>
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<p>That is, this conversion is whatever the implementation of
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<code><a href="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for U</code> chooses to do.</p>
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</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-ToString-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/alloc/string.rs.html#2543">source</a><a href="#impl-ToString-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.78.0/alloc/string/trait.ToString.html" title="trait alloc::string::ToString">ToString</a> for T<div class="where">where
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T: <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + ?<a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.to_string" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/alloc/string.rs.html#2549">source</a><a href="#method.to_string" class="anchor">§</a><h4 class="code-header">default fn <a href="https://doc.rust-lang.org/1.78.0/alloc/string/trait.ToString.html#tymethod.to_string" class="fn">to_string</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/1.78.0/alloc/string/struct.String.html" title="struct alloc::string::String">String</a></h4></section></summary><div class='docblock'>Converts the given value to a <code>String</code>. <a href="https://doc.rust-lang.org/1.78.0/alloc/string/trait.ToString.html#tymethod.to_string">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#805-807">source</a><a href="#impl-TryFrom%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl"><a href="#associatedtype.Error-1" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/1.78.0/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#812">source</a><a href="#method.try_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html#tymethod.try_from" class="fn">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/1.78.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#790-792">source</a><a href="#impl-TryInto%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl"><a href="#associatedtype.Error" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#797">source</a><a href="#method.try_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryInto.html#tymethod.try_into" class="fn">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/1.78.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details></div><script type="text/json" id="notable-traits-data">{"Chain<'_>":"<h3>Notable traits for <code><a class=\"struct\" href=\"struct.Chain.html\" title=\"struct anyhow::Chain\">Chain</a><'a></code></h3><pre><code><div class=\"where\">impl<'a> <a class=\"trait\" href=\"https://doc.rust-lang.org/1.78.0/core/iter/traits/iterator/trait.Iterator.html\" title=\"trait core::iter::traits::iterator::Iterator\">Iterator</a> for <a class=\"struct\" href=\"struct.Chain.html\" title=\"struct anyhow::Chain\">Chain</a><'a></div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.78.0/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item\" class=\"associatedtype\">Item</a> = &'a (dyn <a class=\"trait\" href=\"https://doc.rust-lang.org/1.78.0/core/error/trait.Error.html\" title=\"trait core::error::Error\">StdError</a> + 'static);</div>"}</script></section></div></main></body></html> |