<!DOCTYPE html><htmllang="en"><head><metacharset="utf-8"><metaname="viewport"content="width=device-width, initial-scale=1.0"><metaname="generator"content="rustdoc"><metaname="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><linkrel="stylesheet"href="../static.files/normalize-76eba96aa4d2e634.css"><linkrel="stylesheet"href="../static.files/rustdoc-dd39b87e5fcfba68.css"><metaname="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"><scriptsrc="../static.files/storage-118b08c4c78b968e.js"></script><scriptdefersrc="sidebar-items.js"></script><scriptdefersrc="../static.files/main-20a3ad099b048cf2.js"></script><noscript><linkrel="stylesheet"href="../static.files/noscript-df360f571f6edeae.css"></noscript><linkrel="alternate icon"type="image/png"href="../static.files/favicon-32x32-422f7d1d52889060.png"><linkrel="icon"type="image/svg+xml"href="../static.files/favicon-2c020d218678b618.svg"></head><bodyclass="rustdoc struct"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><navclass="mobile-topbar"><buttonclass="sidebar-menu-toggle"title="show sidebar"></button><aclass="logo-container"href="../tracing/index.html"><imgsrc="https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png"alt=""></a></nav><navclass="sidebar"><divclass="sidebar-crate"><aclass="logo-container"href="../tracing/index.html"><imgsrc="https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png"alt="logo"></a><h2><ahref="../tracing/index.html">tracing</a><spanclass="version">0.1.40</span></h2></div><h2class="location"><ahref="#">Event</a></h2><divclass="sidebar-elems"><section><h3><ahref="#implementations">Methods</a></h3><ulclass="block method"><li><ahref="#method.child_of">child_of</a></li><li><ahref="#method.dispatch">dispatch</a></li><li><ahref="#method.fields">fields</a></li><li><ahref="#method.is_contextual">is_contextual</a></li><li><ahref="#method.is_root">is_root</a></li><li><ahref="#method.metadata">metadata</a></li><li><ahref="#method.new">new</a></li><li><ahref="#method.new_child_of">new_child_of</a></li><li><ahref="#method.parent">parent</a></li><li><ahref="#method.record">record</a></li></ul><h3><ahref="#trait-implementations">Trait Implementations</a></h3><ulclass="block trait-implementation"><li><ahref="#impl-Debug-for-Event%3C'a%3E">Debug</a></li></ul><h3><ahref="#synthetic-implementations">Auto Trait Implementations</a></h3><ulclass="block synthetic-implementation"><li><ahref="#impl-RefUnwindSafe-for-Event%3C'a%3E">!RefUnwindSafe</a></li><li><ahref="#impl-Send-for-Event%3C'a%3E">!Send</a></li><li><ahref="#impl-Sync-for-Event%3C'a%3E">!Sync</a></li><li><ahref="#impl-UnwindSafe-for-Event%3C'a%3E">!UnwindSafe</a></li><li><ahref="#impl-Freeze-for-Event%3C'a%3E">Freeze</a></li><li><ahref="#impl-Unpin-for-Event%3C'a%3E">Unpin</a></li></ul><h3><ahref="#blanket-implementations">Blanket Implementations</a></h3><ulclass="block blanket-implementation"><li><ahref="#impl-Any-for-T">Any</a></li><li><ahref="#impl-Borrow%3CT%3E-for-T">Borrow<T></a></li><li><ahref="#impl-BorrowMut%3CT%3E-for-T">BorrowMut<T></a></li><li><ahref="#impl-From%3CT%3E-for-T">Fro
<p>An <code>Event</code> can be compared to a log record in unstructured logging, but with
two key differences:</p>
<ul>
<li><code>Event</code>s exist <em>within the context of a <ahref="../tracing_core/span/index.html"title="mod tracing_core::span">span</a></em>. Unlike log lines, they
may be located within the trace tree, allowing visibility into the
<em>temporal</em> context in which the event occurred, as well as the source
code location.</li>
<li>Like spans, <code>Event</code>s have structured key-value data known as <em><ahref="../tracing_core/field/index.html"title="mod tracing_core::field">fields</a></em>,
which may include textual message. In general, a majority of the data
associated with an event should be in the event’s fields rather than in
the textual message, as the fields are more structured.</li>
</ul>
</div></details><h2id="implementations"class="section-header">Implementations<ahref="#implementations"class="anchor">§</a></h2><divid="implementations-list"><detailsclass="toggle implementors-toggle"open><summary><sectionid="impl-Event%3C'a%3E"class="impl"><aclass="src rightside"href="../src/tracing_core/event.rs.html#29">source</a><ahref="#impl-Event%3C'a%3E"class="anchor">§</a><h3class="code-header">impl<'a><aclass="struct"href="event/struct.Event.html"title="struct tracing::event::Event">Event</a><'a></h3></section></summary><divclass="impl-items"><detailsclass="toggle method-toggle"open><summary><sectionid="method.dispatch"class="method"><aclass="src rightside"href="../src/tracing_core/event.rs.html#32">source</a><h4class="code-header">pub fn <ahref="#method.dispatch"class="fn">dispatch</a>(metadata: &'static <aclass="struct"href="struct.Metadata.html"title="struct tracing::Metadata">Metadata</a><'static>, fields: &'a <aclass="struct"href="field/struct.ValueSet.html"title="struct tracing::field::ValueSet">ValueSet</a><'_>)</h4></section></summary><divclass="docblock"><p>Constructs a new <code>Event</code> with the specified metadata and set of values,
) -><aclass="struct"href="event/struct.Event.html"title="struct tracing::event::Event">Event</a><'a></h4></section></summary><divclass="docblock"><p>Returns a new <code>Event</code> in the current span, with the specified metadata
) -><aclass="struct"href="event/struct.Event.html"title="struct tracing::event::Event">Event</a><'a></h4></section></summary><divclass="docblock"><p>Returns a new <code>Event</code> as a child of the specified span, with the
)</h4></section></summary><divclass="docblock"><p>Constructs a new <code>Event</code> with the specified metadata and set of values,
and observes it with the current subscriber and an explicit parent.</p>
</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.record"class="method"><aclass="src rightside"href="../src/tracing_core/event.rs.html#86">source</a><h4class="code-header">pub fn <ahref="#method.record"class="fn">record</a>(&self, visitor: &mut dyn <aclass="trait"href="field/trait.Visit.html"title="trait tracing::field::Visit">Visit</a>)</h4></section></summary><divclass="docblock"><p>Visits all the fields on this <code>Event</code> with the specified <ahref="field/trait.Visit.html"title="trait tracing::field::Visit">visitor</a>.</p>
</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.fields"class="method"><aclass="src rightside"href="../src/tracing_core/event.rs.html#91">source</a><h4class="code-header">pub fn <ahref="#method.fields"class="fn">fields</a>(&self) -><aclass="struct"href="field/struct.Iter.html"title="struct tracing::field::Iter">Iter</a><ahref="#"class="tooltip"data-notable-ty="Iter">ⓘ</a></h4></section></summary><divclass="docblock"><p>Returns an iterator over the set of values on this <code>Event</code>.</p>
</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.is_root"class="method"><aclass="src rightside"href="../src/tracing_core/event.rs.html#103">source</a><h4class="code-header">pub fn <ahref="#method.is_root"class="fn">is_root</a>(&self) -><aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a></h4></section></summary><divclass="docblock"><p>Returns true if the new event should be a root.</p>
</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.is_contextual"class="method"><aclass="src rightside"href="../src/tracing_core/event.rs.html#114">source</a><h4class="code-header">pub fn <ahref="#method.is_contextual"class="fn">is_contextual</a>(&self) -><aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a></h4></section></summary><divclass="docblock"><p>Returns true if the new event’s parent should be determined based on the
</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.parent"class="method"><aclass="src rightside"href="../src/tracing_core/event.rs.html#122">source</a><h4class="code-header">pub fn <ahref="#method.parent"class="fn">parent</a>(&self) -><aclass="enum"href="https://doc.rust-lang.org/1.80.0/core/option/enum.Option.html"title="enum core::option::Option">Option</a><&<aclass="struct"href="span/struct.Id.html"title="struct tracing::span::Id">Id</a>></h4></section></summary><divclass="docblock"><p>Returns the new event’s explicitly-specified parent, if there is one.</p>
</div></details></div></details></div><h2id="trait-implementations"class="section-header">Trait Implementations<ahref="#trait-implementations"class="anchor">§</a></h2><divid="trait-implementations-list"><detailsclass="toggle implementors-toggle"open><summary><sectionid="impl-Debug-for-Event%3C'a%3E"class="impl"><aclass="src rightside"href="../src/tracing_core/event.rs.html#22">source</a><ahref="#impl-Debug-for-Event%3C'a%3E"class="anchor">§</a><h3class="code-header">impl<'a><aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/fmt/trait.Debug.html"title="trait core::fmt::Debug">Debug</a> for <aclass="struct"href="event/struct.Event.html"title="struct tracing::event::Event">Event</a><'a></h3></section></summary><divclass="impl-items"><detailsclass="toggle method-toggle"open><summary><sectionid="method.fmt"class="method trait-impl"><aclass="src rightside"href="../src/tracing_core/event.rs.html#22">source</a><ahref="#method.fmt"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.80.0/core/fmt/trait.Debug.html#tymethod.fmt"class="fn">fmt</a>(&self, f: &mut <aclass="struct"href="https://doc.rust-lang.org/1.80.0/core/fmt/struct.Formatter.html"title="struct core::fmt::Formatter">Formatter</a><'_>) -><aclass="enum"href="https://doc.rust-lang.org/1.80.0/core/result/enum.Result.html"title="enum core::result::Result">Result</a><<aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.unit.html">()</a>, <aclass="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><divclass='docblock'>Formats the value using the given formatter. <ahref="https://doc.rust-lang.org/1.80.0/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details></div><h2id="synthetic-implementations"class="section-header">Auto Trait Implementations<ahref="#synthetic-implementations"class="anchor">§</a></h2><divid="synthetic-implementations-list"><sectionid="impl-Freeze-for-Event%3C'a%3E"class="impl"><ahref="#impl-Freeze-for-Event%3C'a%3E"class="anchor">§</a><h3class="code-header">impl<'a><aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Freeze.html"title="trait core::marker::Freeze">Freeze</a> for <aclass="struct"href="event/struct.Event.html"title="struct tracing::event::Event">Event</a><'a></h3></section><sectionid="impl-RefUnwindSafe-for-Event%3C'a%3E"class="impl"><ahref="#impl-RefUnwindSafe-for-Event%3C'a%3E"class="anchor">§</a><h3class="code-header">impl<'a> !<aclass="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 <aclass="struct"href="event/struct.Event.html"title="struct tracing::event::Event">Event</a><'a></h3></section><sectionid="impl-Send-for-Event%3C'a%3E"class="impl"><ahref="#impl-Send-for-Event%3C'a%3E"class="anchor">§</a><h3class="code-header">impl<'a> !<aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Send.html"title="trait core::marker::Send">Send</a> for <aclass="struct"href="event/struct.Event.html"title="struct tracing::event::Event">Event</a><'a></h3></section><sectionid="impl-Sync-for-Event%3C'a%3E"class="impl"><ahref="#impl-Sync-for-Event%3C'a%3E"class="anchor">§</a><h3class="code-header">impl<'a> !<aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sync.html"title="trait core::marker::Sync">Sync</a> for <aclass="struct"href="event/struct.Event.html"title="struct tracing::event::Event">Event</a><'a></h3></section><sectionid="impl-Unpin-for-Event%3C'a%3E"class="impl"><ahref="#impl-Unpin-for-Event%3C'a%3E"class="anchor">§</a><h3class="code-header">impl<'a><aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Unpin.html"title="trait core::marker::Unpin">Unpin</a> for <aclass="struct"h
T: 'static + ?<aclass="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><divclass="impl-items"><detailsclass="toggle method-toggle"open><summary><sectionid="method.type_id"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/core/any.rs.html#141">source</a><ahref="#method.type_id"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.80.0/core/any/trait.Any.html#tymethod.type_id"class="fn">type_id</a>(&self) -><aclass="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><divclass='docblock'>Gets the <code>TypeId</code> of <code>self</code>. <ahref="https://doc.rust-lang.org/1.80.0/core/any/trait.Any.html#tymethod.type_id">Read more</a></div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-Borrow%3CT%3E-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/core/borrow.rs.html#208">source</a><ahref="#impl-Borrow%3CT%3E-for-T"class="anchor">§</a><h3class="code-header">impl<T><aclass="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<divclass="where">where
T: ?<aclass="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><divclass="impl-items"><detailsclass="toggle method-toggle"open><summary><sectionid="method.borrow"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/core/borrow.rs.html#210">source</a><ahref="#method.borrow"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.80.0/core/borrow/trait.Borrow.html#tymethod.borrow"class="fn">borrow</a>(&self) -><aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&T</a></h4></section></summary><divclass='docblock'>Immutably borrows from an owned value. <ahref="https://doc.rust-lang.org/1.80.0/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-BorrowMut%3CT%3E-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/core/borrow.rs.html#216">source</a><ahref="#impl-BorrowMut%3CT%3E-for-T"class="anchor">§</a><h3class="code-header">impl<T><aclass="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<divclass="where">where
T: ?<aclass="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><divclass="impl-items"><detailsclass="toggle method-toggle"open><summary><sectionid="method.borrow_mut"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/core/borrow.rs.html#217">source</a><ahref="#method.borrow_mut"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.80.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut"class="fn">borrow_mut</a>(&mut self) -><aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&mut T</a></h4></section></summary><divclass='docblock'>Mutably borrows from an owned value. <ahref="https://doc.rust-lang.org/1.80.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-From%3CT%3E-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#765">source</a><ahref="#impl-From%3CT%3E-for-T"class="anchor">§</a><h3class="code-header">impl<T><aclass="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><divclass="impl-items"><detailsclass="toggle method-toggle"open><summary><sectionid="method.from"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#768">source</a><ahref="#method.from"class="anchor">§</a><h4class="code-header">fn <ahref="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><divclass="docblock"><p>Returns the argument unchanged.</p>
</div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-Instrument-for-T"class="impl"><aclass="src rightside"href="../src/tracing/instrument.rs.html#325">source</a><ahref="#impl-Instrument-for-T"class="anchor">§</a><h3class="code-header">impl<T><aclass="trait"href="trait.Instrument.html"title="trait tracing::Instrument">Instrument</a> for T</h3></section></summary><divclass="impl-items"><detailsclass="toggle method-toggle"open><summary><sectionid="method.instrument"class="method trait-impl"><aclass="src rightside"href="../src/tracing/instrument.rs.html#86-91">source</a><ahref="#method.instrument"class="anchor">§</a><h4class="code-header">fn <ahref="trait.Instrument.html#method.instrument"class="fn">instrument</a>(self, span: <aclass="struct"href="struct.Span.html"title="struct tracing::Span">Span</a>) -><aclass="struct"href="instrument/struct.Instrumented.html"title="struct tracing::instrument::Instrumented">Instrumented</a><Self><ahref="#"class="tooltip"data-notable-ty="Instrumented<Self>">ⓘ</a></h4></section></summary><divclass='docblock'>Instruments this type with the provided <ahref="struct.Span.html"title="struct tracing::Span"><code>Span</code></a>, returning an
<code>Instrumented</code> wrapper. <ahref="trait.Instrument.html#method.instrument">Read more</a></div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.in_current_span"class="method trait-impl"><aclass="src rightside"href="../src/tracing/instrument.rs.html#128-130">source</a><ahref="#method.in_current_span"class="anchor">§</a><h4class="code-header">fn <ahref="trait.Instrument.html#method.in_current_span"class="fn">in_current_span</a>(self) -><aclass="struct"href="instrument/struct.Instrumented.html"title="struct tracing::instrument::Instrumented">Instrumented</a><Self><ahref="#"class="tooltip"data-notable-ty="Instrumented<Self>">ⓘ</a></h4></section></summary><divclass='docblock'>Instruments this type with the <ahref="struct.Span.html#method.current"title="associated function tracing::Span::current">current</a><ahref="struct.Span.html"title="struct tracing::Span"><code>Span</code></a>, returning an
<code><ahref="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>
</div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-TryFrom%3CU%3E-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#805-807">source</a><ahref="#impl-TryFrom%3CU%3E-for-T"class="anchor">§</a><h3class="code-header">impl<T, U><aclass="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<divclass="where">where
U: <aclass="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><divclass="impl-items"><detailsclass="toggle"open><summary><sectionid="associatedtype.Error"class="associatedtype trait-impl"><ahref="#associatedtype.Error"class="anchor">§</a><h4class="code-header">type <ahref="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html#associatedtype.Error"class="associatedtype">Error</a> = <aclass="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><divclass='docblock'>The type returned in the event of a conversion error.</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.try_from"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#812">source</a><ahref="#method.try_from"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html#tymethod.try_from"class="fn">try_from</a>(value: U) -><aclass="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 <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><U>>::<aclass="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><divclass='docblock'>Performs the conversion.</div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-TryInto%3CU%3E-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#790-792">source</a><ahref="#impl-TryInto%3CU%3E-for-T"class="anchor">§</a><h3class="code-header">impl<T, U><aclass="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<divclass="where">where
U: <aclass="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><divclass="impl-items"><detailsclass="toggle"open><summary><sectionid="associatedtype.Error-1"class="associatedtype trait-impl"><ahref="#associatedtype.Error-1"class="anchor">§</a><h4class="code-header">type <ahref="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryInto.html#associatedtype.Error"class="associatedtype">Error</a> = <U as <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="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><divclass='docblock'>The type returned in the event of a conversion error.</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.try_into"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#797">source</a><ahref="#method.try_into"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryInto.html#tymethod.try_into"class="fn">try_into</a>(self) -><aclass="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 <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="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><divclass='docblock'>Performs the conversion.</div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-WithSubscriber-for-T"class="impl"><aclass="src rightside"href="../src/tracing/instrument.rs.html#393">source</a><ahref="#impl-WithSubscriber-for-T"class="anchor">§</a><h3class="code-header">impl<T><aclass="trait"href="instrument/trait.WithSubscriber.html"title="trait tracing::instrument::WithSubscriber">WithSubscriber</a> for T</h3></section></summary><divclass="impl-items"><detailsclass="toggle method-toggle"open><summary><sectionid="method.with_subscriber"class="method trait-impl"><aclass="src rightside"href="../src/tracing/instrument.rs.html#176-184">source</a><ahref="#method.with_subscriber"class="anchor">§</a><h4class="code-header">fn <ahref="instrument/trait.WithSubscriber.html#method.with_subscriber"class="fn">with_subscriber</a><S>(self, subscriber: S) -><aclass="struct"href="instrument/struct.WithDispatch.html"title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self><ahref="#"class="tooltip"data-notable-ty="WithDispatch<Self>">ⓘ</a><divclass="where">where
S: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/convert/trait.Into.html"title="trait core::convert::Into">Into</a><<aclass="struct"href="struct.Dispatch.html"title="struct tracing::Dispatch">Dispatch</a>>,</div></h4></section></summary><divclass='docblock'>Attaches the provided <ahref="trait.Subscriber.html"title="trait tracing::Subscriber"><code>Subscriber</code></a> to this type, returning a
<ahref="instrument/struct.WithDispatch.html"title="struct tracing::instrument::WithDispatch"><code>WithDispatch</code></a> wrapper. <ahref="instrument/trait.WithSubscriber.html#method.with_subscriber">Read more</a></div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.with_current_subscriber"class="method trait-impl"><aclass="src rightside"href="../src/tracing/instrument.rs.html#228-233">source</a><ahref="#method.with_current_subscriber"class="anchor">§</a><h4class="code-header">fn <ahref="instrument/trait.WithSubscriber.html#method.with_current_subscriber"class="fn">with_current_subscriber</a>(self) -><aclass="struct"href="instrument/struct.WithDispatch.html"title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self><ahref="#"class="tooltip"data-notable-ty="WithDispatch<Self>">ⓘ</a></h4></section></summary><divclass='docblock'>Attaches the current <ahref="dispatcher/index.html#setting-the-default-subscriber"title="mod tracing::dispatcher">default</a><ahref="trait.Subscriber.html"title="trait tracing::Subscriber"><code>Subscriber</code></a> to this type, returning a
