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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="Provides the `wrap_err` method for `Result`."><title>WrapErr in eyre - Rust</title><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 href="../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../static.files/rustdoc-ac92e1bbe349e143.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="eyre" data-themes="" data-resource-suffix="" data-rustdoc-version="1.76.0 (07dca489a 2024-02-04)" data-channel="1.76.0" data-search-js="search-2b6ce74ff89ae146.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../static.files/storage-f2adc0d6ca4d09fb.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-305769736d49e732.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-feafe1bb7466e4bd.css"></noscript><link rel="alternate icon" type="image/png" href="../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc trait"><!--[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">&#9776;</button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../eyre/index.html">eyre</a><span class="version">0.6.12</span></h2></div><h2 class="location"><a href="#">WrapErr</a></h2><div class="sidebar-elems"><section><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.context">context</a></li><li><a href="#tymethod.with_context">with_context</a></li><li><a href="#tymethod.wrap_err">wrap_err</a></li><li><a href="#tymethod.wrap_err_with">wrap_err_with</a></li></ul><h3><a href="#foreign-impls">Implementations on Foreign Types</a></h3><ul class="block"><li><a href="#impl-WrapErr%3CT,+E%3E-for-Result%3CT,+E%3E">Result&lt;T, E&gt;</a></li></ul><h3><a href="#object-safety">Object Safety</a></h3><h3><a href="#implementors">Implementors</a></h3></section><h2><a href="index.html">In crate eyre</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="../eyre/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>Trait <a href="index.html">eyre</a>::<wbr><a class="trait" href="#">WrapErr</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/eyre/lib.rs.html#1099-1126">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>&#x2212;</span>]</button></span></div><pre class="rust item-decl"><code>pub trait WrapErr&lt;T, E&gt;: Sealed {
// Required methods
fn <a href="#tymethod.wrap_err" class="fn">wrap_err</a>&lt;D&gt;(self, msg: D) -&gt; <a class="type" href="type.Result.html" title="type eyre::Result">Result</a>&lt;T, <a class="struct" href="struct.Report.html" title="struct eyre::Report">Report</a>&gt;
<span class="where">where D: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static</span>;
<span class="item-spacer"></span> fn <a href="#tymethod.wrap_err_with" class="fn">wrap_err_with</a>&lt;D, F&gt;(self, f: F) -&gt; <a class="type" href="type.Result.html" title="type eyre::Result">Result</a>&lt;T, <a class="struct" href="struct.Report.html" title="struct eyre::Report">Report</a>&gt;
<span class="where">where D: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,
F: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>() -&gt; D</span>;
<span class="item-spacer"></span> fn <a href="#tymethod.context" class="fn">context</a>&lt;D&gt;(self, msg: D) -&gt; <a class="type" href="type.Result.html" title="type eyre::Result">Result</a>&lt;T, <a class="struct" href="struct.Report.html" title="struct eyre::Report">Report</a>&gt;
<span class="where">where D: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static</span>;
<span class="item-spacer"></span> fn <a href="#tymethod.with_context" class="fn">with_context</a>&lt;D, F&gt;(self, f: F) -&gt; <a class="type" href="type.Result.html" title="type eyre::Result">Result</a>&lt;T, <a class="struct" href="struct.Report.html" title="struct eyre::Report">Report</a>&gt;
<span class="where">where D: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,
F: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>() -&gt; D</span>;
}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Provides the <code>wrap_err</code> method for <code>Result</code>.</p>
<p>This trait is sealed and cannot be implemented for types outside of
<code>eyre</code>.</p>
<h2 id="example"><a href="#example">Example</a></h2>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>eyre::{WrapErr, <span class="prelude-ty">Result</span>};
<span class="kw">use </span>std::fs;
<span class="kw">use </span>std::path::PathBuf;
<span class="kw">pub struct </span>ImportantThing {
path: PathBuf,
}
<span class="kw">impl </span>ImportantThing {
<span class="kw">pub fn </span>detach(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; <span class="prelude-ty">Result</span>&lt;()&gt; {...}
}
<span class="kw">pub fn </span>do_it(<span class="kw-2">mut </span>it: ImportantThing) -&gt; <span class="prelude-ty">Result</span>&lt;Vec&lt;u8&gt;&gt; {
it.detach().wrap_err(<span class="string">"Failed to detach the important thing"</span>)<span class="question-mark">?</span>;
<span class="kw">let </span>path = <span class="kw-2">&amp;</span>it.path;
<span class="kw">let </span>content = fs::read(path)
.wrap_err_with(|| <span class="macro">format!</span>(<span class="string">"Failed to read instrs from {}"</span>, path.display()))<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(content)
}</code></pre></div>
<p>When printed, the outermost error would be printed first and the lower
level underlying causes would be enumerated below.</p>
<div class="example-wrap"><pre class="language-console"><code>Error: Failed to read instrs from ./path/to/instrs.json
Caused by:
No such file or directory (os error 2)
</code></pre></div><h2 id="wrapping-types-that-dont-impl-error-eg-str-and-boxdyn-error"><a href="#wrapping-types-that-dont-impl-error-eg-str-and-boxdyn-error">Wrapping Types That Dont impl <code>Error</code> (e.g. <code>&amp;str</code> and <code>Box&lt;dyn Error&gt;</code>)</a></h2>
<p>Due to restrictions for coherence <code>Report</code> cannot impl <code>From</code> for types that dont impl
<code>Error</code>. Attempts to do so will give “this type might implement Error in the future” as an
error. As such, <code>wrap_err</code>, which uses <code>From</code> under the hood, cannot be used to wrap these
types. Instead we encourage you to use the combinators provided for <code>Result</code> in <code>std</code>/<code>core</code>.</p>
<p>For example, instead of this:</p>
<div class="example-wrap compile_fail"><a href="#" class="tooltip" title="This example deliberately fails to compile"></a><pre class="rust rust-example-rendered"><code><span class="kw">use </span>std::error::Error;
<span class="kw">use </span>eyre::{WrapErr, Report};
<span class="kw">fn </span>wrap_example(err: <span class="prelude-ty">Result</span>&lt;(), Box&lt;<span class="kw">dyn </span>Error + Send + Sync + <span class="lifetime">'static</span>&gt;&gt;) -&gt; <span class="prelude-ty">Result</span>&lt;(), Report&gt; {
err.wrap_err(<span class="string">"saw a downstream error"</span>)
}</code></pre></div>
<p>We encourage you to write this:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>std::error::Error;
<span class="kw">use </span>eyre::{WrapErr, Report, eyre};
<span class="kw">fn </span>wrap_example(err: <span class="prelude-ty">Result</span>&lt;(), Box&lt;<span class="kw">dyn </span>Error + Send + Sync + <span class="lifetime">'static</span>&gt;&gt;) -&gt; <span class="prelude-ty">Result</span>&lt;(), Report&gt; {
err.map_err(|e| <span class="macro">eyre!</span>(e)).wrap_err(<span class="string">"saw a downstream error"</span>)
}</code></pre></div>
<h2 id="effect-on-downcasting"><a href="#effect-on-downcasting">Effect on downcasting</a></h2>
<p>After attaching a message of type <code>D</code> onto an error of type <code>E</code>, the resulting
<code>eyre::Report</code> may be downcast to <code>D</code> <strong>or</strong> to <code>E</code>.</p>
<p>That is, in codebases that rely on downcasting, Eyres wrap_err supports
both of the following use cases:</p>
<ul>
<li>
<p><strong>Attaching messages whose type is insignificant onto errors whose type
is used in downcasts.</strong></p>
<p>In other error libraries whose wrap_err is not designed this way, it can
be risky to introduce messages to existing code because new message might
break existing working downcasts. In Eyre, any downcast that worked
before adding the message will continue to work after you add a message, so
you should freely wrap errors wherever it would be helpful.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>eyre::{WrapErr, <span class="prelude-ty">Result</span>};
<span class="kw">fn </span>do_it() -&gt; <span class="prelude-ty">Result</span>&lt;()&gt; {
helper().wrap_err(<span class="string">"Failed to complete the work"</span>)<span class="question-mark">?</span>;
...
}
<span class="kw">fn </span>main() {
<span class="kw">let </span>err = do_it().unwrap_err();
<span class="kw">if let </span><span class="prelude-val">Some</span>(e) = err.downcast_ref::&lt;SuspiciousError&gt;() {
<span class="comment">// If helper() returned SuspiciousError, this downcast will
// correctly succeed even with the message in between.
</span>}
}</code></pre></div>
</li>
<li>
<p><strong>Attaching message whose type is used in downcasts onto errors whose
type is insignificant.</strong></p>
<p>Some codebases prefer to use machine-readable messages to categorize
lower level errors in a way that will be actionable to higher levels of
the application.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>eyre::{WrapErr, <span class="prelude-ty">Result</span>};
<span class="kw">fn </span>do_it() -&gt; <span class="prelude-ty">Result</span>&lt;()&gt; {
helper().wrap_err(HelperFailed)<span class="question-mark">?</span>;
...
}
<span class="kw">fn </span>main() {
<span class="kw">let </span>err = do_it().unwrap_err();
<span class="kw">if let </span><span class="prelude-val">Some</span>(e) = err.downcast_ref::&lt;HelperFailed&gt;() {
<span class="comment">// If helper failed, this downcast will succeed because
// HelperFailed is the message that has been attached to
// that error.
</span>}
}</code></pre></div>
</li>
</ul>
<h2 id="wrap_err-vs-wrap_err_with"><a href="#wrap_err-vs-wrap_err_with"><code>wrap_err</code> vs <code>wrap_err_with</code></a></h2>
<p><code>wrap_err</code> incurs a runtime cost even in the non-error case because it requires eagerly
constructing the error object. <code>wrap_err_with</code> avoids this cost through lazy evaluation. This
cost is proportional to the cost of the currently installed <a href="trait.EyreHandler.html" title="trait eyre::EyreHandler"><code>EyreHandler</code></a>s creation step.
<code>wrap_err</code> is useful in cases where an constructed error object already exists.</p>
</div></details><h2 id="required-methods" class="section-header">Required Methods<a href="#required-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="tymethod.wrap_err" class="method"><a class="src rightside" href="../src/eyre/lib.rs.html#1102-1104">source</a><h4 class="code-header">fn <a href="#tymethod.wrap_err" class="fn">wrap_err</a>&lt;D&gt;(self, msg: D) -&gt; <a class="type" href="type.Result.html" title="type eyre::Result">Result</a>&lt;T, <a class="struct" href="struct.Report.html" title="struct eyre::Report">Report</a>&gt;<div class="where">where
D: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/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 a new adhoc error</p>
</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.wrap_err_with" class="method"><a class="src rightside" href="../src/eyre/lib.rs.html#1109-1112">source</a><h4 class="code-header">fn <a href="#tymethod.wrap_err_with" class="fn">wrap_err_with</a>&lt;D, F&gt;(self, f: F) -&gt; <a class="type" href="type.Result.html" title="type eyre::Result">Result</a>&lt;T, <a class="struct" href="struct.Report.html" title="struct eyre::Report">Report</a>&gt;<div class="where">where
D: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,
F: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>() -&gt; D,</div></h4></section></summary><div class="docblock"><p>Wrap the error value with a new adhoc error that is evaluated lazily
only once an error does occur.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.context" class="method"><a class="src rightside" href="../src/eyre/lib.rs.html#1116-1118">source</a><h4 class="code-header">fn <a href="#tymethod.context" class="fn">context</a>&lt;D&gt;(self, msg: D) -&gt; <a class="type" href="type.Result.html" title="type eyre::Result">Result</a>&lt;T, <a class="struct" href="struct.Report.html" title="struct eyre::Report">Report</a>&gt;<div class="where">where
D: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h4></section></summary><div class="docblock"><p>Compatibility re-export of wrap_err for interop with <code>anyhow</code></p>
</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.with_context" class="method"><a class="src rightside" href="../src/eyre/lib.rs.html#1122-1125">source</a><h4 class="code-header">fn <a href="#tymethod.with_context" class="fn">with_context</a>&lt;D, F&gt;(self, f: F) -&gt; <a class="type" href="type.Result.html" title="type eyre::Result">Result</a>&lt;T, <a class="struct" href="struct.Report.html" title="struct eyre::Report">Report</a>&gt;<div class="where">where
D: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,
F: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>() -&gt; D,</div></h4></section></summary><div class="docblock"><p>Compatibility re-export of wrap_err_with for interop with <code>anyhow</code></p>
</div></details></div><h2 id="object-safety" class="section-header">Object Safety<a href="#object-safety" class="anchor">§</a></h2><div class="object-safety-info">This trait is <b>not</b> <a href="https://doc.rust-lang.org/1.76.0/reference/items/traits.html#object-safety">object safe</a>.</div><h2 id="foreign-impls" class="section-header">Implementations on Foreign Types<a href="#foreign-impls" class="anchor">§</a></h2><details class="toggle implementors-toggle"><summary><section id="impl-WrapErr%3CT,+E%3E-for-Result%3CT,+E%3E" class="impl"><a class="src rightside" href="../src/eyre/context.rs.html#40-79">source</a><a href="#impl-WrapErr%3CT,+E%3E-for-Result%3CT,+E%3E" class="anchor">§</a><h3 class="code-header">impl&lt;T, E&gt; <a class="trait" href="trait.WrapErr.html" title="trait eyre::WrapErr">WrapErr</a>&lt;T, E&gt; for <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, E&gt;<div class="where">where
E: StdError + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h3></section></summary><div class="impl-items"><section id="method.wrap_err" class="method trait-impl"><a class="src rightside" href="../src/eyre/context.rs.html#44-52">source</a><a href="#method.wrap_err" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.wrap_err" class="fn">wrap_err</a>&lt;D&gt;(self, msg: D) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, <a class="struct" href="struct.Report.html" title="struct eyre::Report">Report</a>&gt;<div class="where">where
D: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h4></section><section id="method.wrap_err_with" class="method trait-impl"><a class="src rightside" href="../src/eyre/context.rs.html#54-63">source</a><a href="#method.wrap_err_with" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.wrap_err_with" class="fn">wrap_err_with</a>&lt;D, F&gt;(self, msg: F) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, <a class="struct" href="struct.Report.html" title="struct eyre::Report">Report</a>&gt;<div class="where">where
D: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,
F: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>() -&gt; D,</div></h4></section><section id="method.context" class="method trait-impl"><a class="src rightside" href="../src/eyre/context.rs.html#65-70">source</a><a href="#method.context" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.context" class="fn">context</a>&lt;D&gt;(self, msg: D) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, <a class="struct" href="struct.Report.html" title="struct eyre::Report">Report</a>&gt;<div class="where">where
D: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h4></section><section id="method.with_context" class="method trait-impl"><a class="src rightside" href="../src/eyre/context.rs.html#72-78">source</a><a href="#method.with_context" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.with_context" class="fn">with_context</a>&lt;D, F&gt;(self, msg: F) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, <a class="struct" href="struct.Report.html" title="struct eyre::Report">Report</a>&gt;<div class="where">where
D: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,
F: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>() -&gt; D,</div></h4></section></div></details><h2 id="implementors" class="section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"></div><script src="../trait.impl/eyre/trait.WrapErr.js" data-ignore-extern-crates="core" async></script></section></div></main></body></html>