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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="`Event`s represent single points in time where something occurred during the execution of a program."><title>Event in tracing - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-46f98efaafac5295.ttf.woff2,FiraSans-Regular-018c141bf0843ffd.woff2,FiraSans-Medium-8f9a781e4970d388.woff2,SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2,SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../static.files/rustdoc-dd39b87e5fcfba68.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="tracing" data-themes="" data-resource-suffix="" data-rustdoc-version="1.80.0 (051478957 2024-07-21)" data-channel="1.80.0" data-search-js="search-d52510db62a78183.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../static.files/storage-118b08c4c78b968e.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-20a3ad099b048cf2.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-df360f571f6edeae.css"></noscript><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 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><a class="logo-container" href="../tracing/index.html"><img src="https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png" alt=""></a></nav><nav class="sidebar"><div class="sidebar-crate"><a class="logo-container" href="../tracing/index.html"><img src="https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png" alt="logo"></a><h2><a href="../tracing/index.html">tracing</a><span class="version">0.1.40</span></h2></div><h2 class="location"><a href="#">Event</a></h2><div class="sidebar-elems"><section><h3><a href="#implementations">Methods</a></h3><ul class="block method"><li><a href="#method.child_of">child_of</a></li><li><a href="#method.dispatch">dispatch</a></li><li><a href="#method.fields">fields</a></li><li><a href="#method.is_contextual">is_contextual</a></li><li><a href="#method.is_root">is_root</a></li><li><a href="#method.metadata">metadata</a></li><li><a href="#method.new">new</a></li><li><a href="#method.new_child_of">new_child_of</a></li><li><a href="#method.parent">parent</a></li><li><a href="#method.record">record</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block trait-implementation"><li><a href="#impl-Debug-for-Event%3C'a%3E">Debug</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block synthetic-implementation"><li><a href="#impl-RefUnwindSafe-for-Event%3C'a%3E">!RefUnwindSafe</a></li><li><a href="#impl-Send-for-Event%3C'a%3E">!Send</a></li><li><a href="#impl-Sync-for-Event%3C'a%3E">!Sync</a></li><li><a href="#impl-UnwindSafe-for-Event%3C'a%3E">!UnwindSafe</a></li><li><a href="#impl-Freeze-for-Event%3C'a%3E">Freeze</a></li><li><a href="#impl-Unpin-for-Event%3C'a%3E">Unpin</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%3CT%3E-for-T">From<T></a></li><li><a href="#impl-Instrument-for-T">Instrument</a></li><li><a href="#impl-Into%3CU%3E-for-T">Into<U></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><li><a href="#impl-WithSubscriber-for-T">WithSubscriber</a></li></ul></section><h2><a href="index.html">In crate tracing</a></h2></div></nav><div class="sidebar-resizer"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><h1>Struct <a href="index.html">tracing</a>::<wbr><a class="struct" href="#">Event</a><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><span class="out-of-band"><a class="src" href="../src/tracing_core/event.rs.html#23">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>−</span>]</button></span></div><pre class="rust item-decl"><code>pub struct Event<'a> { <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><code>Event</code>s represent single points in time where something occurred during the
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execution of a program.</p>
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<p>An <code>Event</code> can be compared to a log record in unstructured logging, but with
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two key differences:</p>
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<ul>
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<li><code>Event</code>s exist <em>within the context of a <a href="../tracing_core/span/index.html" title="mod tracing_core::span">span</a></em>. Unlike log lines, they
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may be located within the trace tree, allowing visibility into the
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<em>temporal</em> context in which the event occurred, as well as the source
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code location.</li>
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<li>Like spans, <code>Event</code>s have structured key-value data known as <em><a href="../tracing_core/field/index.html" title="mod tracing_core::field">fields</a></em>,
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which may include textual message. In general, a majority of the data
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associated with an event should be in the event’s fields rather than in
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the textual message, as the fields are more structured.</li>
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</ul>
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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-Event%3C'a%3E" class="impl"><a class="src rightside" href="../src/tracing_core/event.rs.html#29">source</a><a href="#impl-Event%3C'a%3E" class="anchor">§</a><h3 class="code-header">impl<'a> <a class="struct" href="event/struct.Event.html" title="struct tracing::event::Event">Event</a><'a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.dispatch" class="method"><a class="src rightside" href="../src/tracing_core/event.rs.html#32">source</a><h4 class="code-header">pub fn <a href="#method.dispatch" class="fn">dispatch</a>(metadata: &'static <a class="struct" href="struct.Metadata.html" title="struct tracing::Metadata">Metadata</a><'static>, fields: &'a <a class="struct" href="field/struct.ValueSet.html" title="struct tracing::field::ValueSet">ValueSet</a><'_>)</h4></section></summary><div class="docblock"><p>Constructs a new <code>Event</code> with the specified metadata and set of values,
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and observes it with the current subscriber.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.new" class="method"><a class="src rightside" href="../src/tracing_core/event.rs.html#42">source</a><h4 class="code-header">pub fn <a href="#method.new" class="fn">new</a>(
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metadata: &'static <a class="struct" href="struct.Metadata.html" title="struct tracing::Metadata">Metadata</a><'static>,
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fields: &'a <a class="struct" href="field/struct.ValueSet.html" title="struct tracing::field::ValueSet">ValueSet</a><'a>,
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) -> <a class="struct" href="event/struct.Event.html" title="struct tracing::event::Event">Event</a><'a></h4></section></summary><div class="docblock"><p>Returns a new <code>Event</code> in the current span, with the specified metadata
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and set of values.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.new_child_of" class="method"><a class="src rightside" href="../src/tracing_core/event.rs.html#53-57">source</a><h4 class="code-header">pub fn <a href="#method.new_child_of" class="fn">new_child_of</a>(
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parent: impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><<a class="enum" href="https://doc.rust-lang.org/1.80.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="span/struct.Id.html" title="struct tracing::span::Id">Id</a>>>,
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metadata: &'static <a class="struct" href="struct.Metadata.html" title="struct tracing::Metadata">Metadata</a><'static>,
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fields: &'a <a class="struct" href="field/struct.ValueSet.html" title="struct tracing::field::ValueSet">ValueSet</a><'a>,
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) -> <a class="struct" href="event/struct.Event.html" title="struct tracing::event::Event">Event</a><'a></h4></section></summary><div class="docblock"><p>Returns a new <code>Event</code> as a child of the specified span, with the
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provided metadata and set of values.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.child_of" class="method"><a class="src rightside" href="../src/tracing_core/event.rs.html#71-75">source</a><h4 class="code-header">pub fn <a href="#method.child_of" class="fn">child_of</a>(
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parent: impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><<a class="enum" href="https://doc.rust-lang.org/1.80.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="span/struct.Id.html" title="struct tracing::span::Id">Id</a>>>,
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metadata: &'static <a class="struct" href="struct.Metadata.html" title="struct tracing::Metadata">Metadata</a><'static>,
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fields: &'a <a class="struct" href="field/struct.ValueSet.html" title="struct tracing::field::ValueSet">ValueSet</a><'_>,
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)</h4></section></summary><div class="docblock"><p>Constructs a new <code>Event</code> with the specified metadata and set of values,
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and observes it with the current subscriber and an explicit parent.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.record" class="method"><a class="src rightside" href="../src/tracing_core/event.rs.html#86">source</a><h4 class="code-header">pub fn <a href="#method.record" class="fn">record</a>(&self, visitor: &mut dyn <a class="trait" href="field/trait.Visit.html" title="trait tracing::field::Visit">Visit</a>)</h4></section></summary><div class="docblock"><p>Visits all the fields on this <code>Event</code> with the specified <a href="field/trait.Visit.html" title="trait tracing::field::Visit">visitor</a>.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.fields" class="method"><a class="src rightside" href="../src/tracing_core/event.rs.html#91">source</a><h4 class="code-header">pub fn <a href="#method.fields" class="fn">fields</a>(&self) -> <a class="struct" href="field/struct.Iter.html" title="struct tracing::field::Iter">Iter</a> <a href="#" class="tooltip" data-notable-ty="Iter">ⓘ</a></h4></section></summary><div class="docblock"><p>Returns an iterator over the set of values on this <code>Event</code>.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.metadata" class="method"><a class="src rightside" href="../src/tracing_core/event.rs.html#98">source</a><h4 class="code-header">pub fn <a href="#method.metadata" class="fn">metadata</a>(&self) -> &'static <a class="struct" href="struct.Metadata.html" title="struct tracing::Metadata">Metadata</a><'static></h4></section></summary><div class="docblock"><p>Returns <a href="struct.Metadata.html" title="struct tracing::Metadata">metadata</a> describing this <code>Event</code>.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.is_root" class="method"><a class="src rightside" href="../src/tracing_core/event.rs.html#103">source</a><h4 class="code-header">pub fn <a href="#method.is_root" class="fn">is_root</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true if the new event should be a root.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.is_contextual" class="method"><a class="src rightside" href="../src/tracing_core/event.rs.html#114">source</a><h4 class="code-header">pub fn <a href="#method.is_contextual" class="fn">is_contextual</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true if the new event’s parent should be determined based on the
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current context.</p>
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<p>If this is true and the current thread is currently inside a span, then
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that span should be the new event’s parent. Otherwise, if the current
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thread is <em>not</em> inside a span, then the new event will be the root of its
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own trace tree.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.parent" class="method"><a class="src rightside" href="../src/tracing_core/event.rs.html#122">source</a><h4 class="code-header">pub fn <a href="#method.parent" class="fn">parent</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.80.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&<a class="struct" href="span/struct.Id.html" title="struct tracing::span::Id">Id</a>></h4></section></summary><div class="docblock"><p>Returns the new event’s explicitly-specified parent, if there is one.</p>
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<p>Otherwise (if the new event is a root or is a child of the current span),
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returns <code>None</code>.</p>
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</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-Debug-for-Event%3C'a%3E" class="impl"><a class="src rightside" href="../src/tracing_core/event.rs.html#22">source</a><a href="#impl-Debug-for-Event%3C'a%3E" class="anchor">§</a><h3 class="code-header">impl<'a> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="event/struct.Event.html" title="struct tracing::event::Event">Event</a><'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/tracing_core/event.rs.html#22">source</a><a href="#method.fmt" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/fmt/trait.Debug.html#tymethod.fmt" class="fn">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/1.80.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="enum" href="https://doc.rust-lang.org/1.80.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/1.80.0/core/fmt/struct.Error.html" title="struct core::fmt::Error">Error</a>></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.80.0/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></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-Event%3C'a%3E" class="impl"><a href="#impl-Freeze-for-Event%3C'a%3E" class="anchor">§</a><h3 class="code-header">impl<'a> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Freeze.html" title="trait core::marker::Freeze">Freeze</a> for <a class="struct" href="event/struct.Event.html" title="struct tracing::event::Event">Event</a><'a></h3></section><section id="impl-RefUnwindSafe-for-Event%3C'a%3E" class="impl"><a href="#impl-RefUnwindSafe-for-Event%3C'a%3E" class="anchor">§</a><h3 class="code-header">impl<'a> !<a class="trait" href="https://doc.rust-lang.org/1.80.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="event/struct.Event.html" title="struct tracing::event::Event">Event</a><'a></h3></section><section id="impl-Send-for-Event%3C'a%3E" class="impl"><a href="#impl-Send-for-Event%3C'a%3E" class="anchor">§</a><h3 class="code-header">impl<'a> !<a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="event/struct.Event.html" title="struct tracing::event::Event">Event</a><'a></h3></section><section id="impl-Sync-for-Event%3C'a%3E" class="impl"><a href="#impl-Sync-for-Event%3C'a%3E" class="anchor">§</a><h3 class="code-header">impl<'a> !<a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="event/struct.Event.html" title="struct tracing::event::Event">Event</a><'a></h3></section><section id="impl-Unpin-for-Event%3C'a%3E" class="impl"><a href="#impl-Unpin-for-Event%3C'a%3E" class="anchor">§</a><h3 class="code-header">impl<'a> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="event/struct.Event.html" title="struct tracing::event::Event">Event</a><'a></h3></section><section id="impl-UnwindSafe-for-Event%3C'a%3E" class="impl"><a href="#impl-UnwindSafe-for-Event%3C'a%3E" class="anchor">§</a><h3 class="code-header">impl<'a> !<a class="trait" href="https://doc.rust-lang.org/1.80.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="event/struct.Event.html" title="struct tracing::event::Event">Event</a><'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/1.80.0/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/1.80.0/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/1.80.0/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/1.80.0/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/1.80.0/core/any/trait.Any.html#tymethod.type_id" class="fn">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/1.80.0/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/1.80.0/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/1.80.0/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/1.80.0/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/1.80.0/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/1.80.0/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/1.80.0/core/borrow/trait.Borrow.html#tymethod.borrow" class="fn">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.80.0/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/1.80.0/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/1.80.0/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/1.80.0/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/1.80.0/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/1.80.0/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/1.80.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fn">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/1.80.0/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/1.80.0/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%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/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/1.80.0/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" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#768">source</a><a href="#method.from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/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-Instrument-for-T" class="impl"><a class="src rightside" href="../src/tracing/instrument.rs.html#325">source</a><a href="#impl-Instrument-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="trait.Instrument.html" title="trait tracing::Instrument">Instrument</a> for T</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.instrument" class="method trait-impl"><a class="src rightside" href="../src/tracing/instrument.rs.html#86-91">source</a><a href="#method.instrument" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Instrument.html#method.instrument" class="fn">instrument</a>(self, span: <a class="struct" href="struct.Span.html" title="struct tracing::Span">Span</a>) -> <a class="struct" href="instrument/struct.Instrumented.html" title="struct tracing::instrument::Instrumented">Instrumented</a><Self> <a href="#" class="tooltip" data-notable-ty="Instrumented<Self>">ⓘ</a></h4></section></summary><div class='docblock'>Instruments this type with the provided <a href="struct.Span.html" title="struct tracing::Span"><code>Span</code></a>, returning an
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<code>Instrumented</code> wrapper. <a href="trait.Instrument.html#method.instrument">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.in_current_span" class="method trait-impl"><a class="src rightside" href="../src/tracing/instrument.rs.html#128-130">source</a><a href="#method.in_current_span" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Instrument.html#method.in_current_span" class="fn">in_current_span</a>(self) -> <a class="struct" href="instrument/struct.Instrumented.html" title="struct tracing::instrument::Instrumented">Instrumented</a><Self> <a href="#" class="tooltip" data-notable-ty="Instrumented<Self>">ⓘ</a></h4></section></summary><div class='docblock'>Instruments this type with the <a href="struct.Span.html#method.current" title="associated function tracing::Span::current">current</a> <a href="struct.Span.html" title="struct tracing::Span"><code>Span</code></a>, returning an
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<code>Instrumented</code> wrapper. <a href="trait.Instrument.html#method.in_current_span">Read more</a></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/1.80.0/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/1.80.0/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/1.80.0/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/1.80.0/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/1.80.0/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/1.80.0/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-TryFrom%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/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/1.80.0/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/1.80.0/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" class="associatedtype trait-impl"><a href="#associatedtype.Error" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/1.80.0/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/1.80.0/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/1.80.0/core/convert/trait.TryFrom.html#tymethod.try_from" class="fn">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/1.80.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.80.0/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/1.80.0/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/1.80.0/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/1.80.0/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-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/1.80.0/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.80.0/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/1.80.0/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/1.80.0/core/convert/trait.TryInto.html#tymethod.try_into" class="fn">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/1.80.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.80.0/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-WithSubscriber-for-T" class="impl"><a class="src rightside" href="../src/tracing/instrument.rs.html#393">source</a><a href="#impl-WithSubscriber-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="instrument/trait.WithSubscriber.html" title="trait tracing::instrument::WithSubscriber">WithSubscriber</a> for T</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.with_subscriber" class="method trait-impl"><a class="src rightside" href="../src/tracing/instrument.rs.html#176-184">source</a><a href="#method.with_subscriber" class="anchor">§</a><h4 class="code-header">fn <a href="instrument/trait.WithSubscriber.html#method.with_subscriber" class="fn">with_subscriber</a><S>(self, subscriber: S) -> <a class="struct" href="instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self> <a href="#" class="tooltip" data-notable-ty="WithDispatch<Self>">ⓘ</a><div class="where">where
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S: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><<a class="struct" href="struct.Dispatch.html" title="struct tracing::Dispatch">Dispatch</a>>,</div></h4></section></summary><div class='docblock'>Attaches the provided <a href="trait.Subscriber.html" title="trait tracing::Subscriber"><code>Subscriber</code></a> to this type, returning a
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<a href="instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch"><code>WithDispatch</code></a> wrapper. <a href="instrument/trait.WithSubscriber.html#method.with_subscriber">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.with_current_subscriber" class="method trait-impl"><a class="src rightside" href="../src/tracing/instrument.rs.html#228-233">source</a><a href="#method.with_current_subscriber" class="anchor">§</a><h4 class="code-header">fn <a href="instrument/trait.WithSubscriber.html#method.with_current_subscriber" class="fn">with_current_subscriber</a>(self) -> <a class="struct" href="instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self> <a href="#" class="tooltip" data-notable-ty="WithDispatch<Self>">ⓘ</a></h4></section></summary><div class='docblock'>Attaches the current <a href="dispatcher/index.html#setting-the-default-subscriber" title="mod tracing::dispatcher">default</a> <a href="trait.Subscriber.html" title="trait tracing::Subscriber"><code>Subscriber</code></a> to this type, returning a
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<a href="instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch"><code>WithDispatch</code></a> wrapper. <a href="instrument/trait.WithSubscriber.html#method.with_current_subscriber">Read more</a></div></details></div></details></div><script type="text/json" id="notable-traits-data">{"Instrumented<Self>":"<h3>Notable traits for <code><a class=\"struct\" href=\"instrument/struct.Instrumented.html\" title=\"struct tracing::instrument::Instrumented\">Instrumented</a><T></code></h3><pre><code><div class=\"where\">impl<T: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>> <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a> for <a class=\"struct\" href=\"instrument/struct.Instrumented.html\" title=\"struct tracing::instrument::Instrumented\">Instrumented</a><T></div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.80.0/core/future/future/trait.Future.html#associatedtype.Output\" class=\"associatedtype\">Output</a> = T::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.80.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>;</div>","Iter":"<h3>Notable traits for <code><a class=\"struct\" href=\"field/struct.Iter.html\" title=\"struct tracing::field::Iter\">Iter</a></code></h3><pre><code><div class=\"where\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/core/iter/traits/iterator/trait.Iterator.html\" title=\"trait core::iter::traits::iterator::Iterator\">Iterator</a> for <a class=\"struct\" href=\"field/struct.Iter.html\" title=\"struct tracing::field::Iter\">Iter</a></div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.80.0/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item\" class=\"associatedtype\">Item</a> = <a class=\"struct\" href=\"field/struct.Field.html\" title=\"struct tracing::field::Field\">Field</a>;</div>","WithDispatch<Self>":"<h3>Notable traits for <code><a class=\"struct\" href=\"instrument/struct.WithDispatch.html\" title=\"struct tracing::instrument::WithDispatch\">WithDispatch</a><T></code></h3><pre><code><div class=\"where\">impl<T: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>> <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a> for <a class=\"struct\" href=\"instrument/struct.WithDispatch.html\" title=\"struct tracing::instrument::WithDispatch\">WithDispatch</a><T></div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.80.0/core/future/future/trait.Future.html#associatedtype.Output\" class=\"associatedtype\">Output</a> = T::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.80.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>;</div>"}</script></section></div></main></body></html> |