<!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="The maximum number of pending connections."><metaname="keywords"content="rust, rustlang, rust-lang, Backlog"><title>Backlog in actix_settings - Rust</title><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../SourceSerif4-Regular.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../FiraSans-Regular.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../FiraSans-Medium.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../SourceCodePro-Regular.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../SourceSerif4-Bold.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../SourceCodePro-Semibold.ttf.woff2"><linkrel="stylesheet"type="text/css"href="../normalize.css"><linkrel="stylesheet"type="text/css"href="../rustdoc.css"id="mainThemeStyle"><linkrel="stylesheet"type="text/css"href="../ayu.css"disabled><linkrel="stylesheet"type="text/css"href="../dark.css"disabled><linkrel="stylesheet"type="text/css"href="../light.css"id="themeStyle"><scriptid="default-settings"></script><scriptsrc="../storage.js"></script><scriptdefersrc="sidebar-items.js"></script><scriptdefersrc="../main.js"></script><noscript><linkrel="stylesheet"href="../noscript.css"></noscript><linkrel="icon"href="https://actix.rs/favicon.ico"></head><bodyclass="rustdoc enum"><!--[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">☰</button><aclass="sidebar-logo"href="../actix_settings/index.html"><divclass="logo-container"><imgsrc="https://actix.rs/img/logo.png"alt="logo"></div></a><h2class="location"></h2></nav><navclass="sidebar"><aclass="sidebar-logo"href="../actix_settings/index.html"><divclass="logo-container">
<imgsrc="https://actix.rs/img/logo.png"alt="logo"></a><navclass="sub"><formclass="search-form"><divclass="search-container"><span></span><inputclass="search-input"name="search"autocomplete="off"spellcheck="false"placeholder="Click or press ‘S’ to search, ‘?’ for more options…"type="search"><divid="help-button"title="help"tabindex="-1"><buttontype="button">?</button></div><divid="settings-menu"tabindex="-1"><ahref="../settings.html"title="settings"><imgwidth="22"height="22"alt="Change settings"src="../wheel.svg"></a></div></div></form></nav></div><sectionid="main-content"class="content"><divclass="main-heading"><h1class="fqn"><spanclass="in-band">Enum <ahref="index.html">actix_settings</a>::<wbr><aclass="enum"href="#">Backlog</a><buttonid="copy-path"onclick="copy_path(this)"title="Copy item path to clipboard"><imgsrc="../clipboard.svg"width="19"height="18"alt="Copy item path"></button></span></h1><spanclass="out-of-band"><aclass="srclink"href="../src/actix_settings/settings/backlog.rs.html#16-22">source</a> · <aid="toggle-all-docs"href="javascript:void(0)"title="collapse all docs">[<spanclass="inner">−</span>]</a></span></div><divclass="docblock item-decl"><preclass="rust enum"><code>pub enum Backlog {
}</code></pre></div><detailsclass="rustdoc-toggle top-doc"open><summaryclass="hideme"><span>Expand description</span></summary><divclass="docblock"><p>The maximum number of pending connections.</p>
<p>This refers to the number of clients that can be waiting to be served. Exceeding this number
results in the client getting an error when attempting to connect. It should only affect servers
under significant load.</p>
<p>Generally set in the 64–2048 range. The default value is 2048. Takes a string value: Either
“default”, or an integer N > 0 e.g. “6”.</p>
</div></details><h2id="variants"class="variants small-section-header">Variants<ahref="#variants"class="anchor"></a></h2><h3id="variant.Default"class="variant small-section-header"><ahref="#variant.Default"class="anchor field"></a><code>Default</code></h3><divclass="docblock"><p>The default number of connections. See struct docs.</p>
</div><h3id="variant.Manual"class="variant small-section-header"><ahref="#variant.Manual"class="anchor field"></a><code>Manual(<aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>)</code></h3><divclass="docblock"><p>A specific number of connections.</p>
</div><h2id="trait-implementations"class="small-section-header">Trait Implementations<ahref="#trait-implementations"class="anchor"></a></h2><divid="trait-implementations-list"><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-Clone-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_settings/settings/backlog.rs.html#15">source</a></span><ahref="#impl-Clone-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl <aclass="trait"href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html"title="trait core::clone::Clone">Clone</a> for <aclass="enum"href="enum.Backlog.html"title="enum actix_settings::Backlog">Backlog</a></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.clone"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_settings/settings/backlog.rs.html#15">source</a></span><ahref="#method.clone"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone"class="fnname">clone</a>(&self) -><aclass="enum"href="enum.Backlog.html"title="enum actix_settings::Backlog">Backlog</a></h4></section></summary><divclass='docblock'><p>Returns a copy of the value. <ahref="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-Debug-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_settings/settings/backlog.rs.html#15">source</a></span><ahref="#impl-Debug-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl <aclass="trait"href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html"title="trait core::fmt::Debug">Debug</a> for <aclass="enum"href="enum.Backlog.html"title="enum actix_settings::Backlog">Backlog</a></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.fmt"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_settings/settings/backlog.rs.html#15">source</a></span><ahref="#method.fmt"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt"class="fnname">fmt</a>(&self, f: &mut <aclass="struct"href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html"title="struct core::fmt::Formatter">Formatter</a><'_>) -><aclass="type"href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html"title="type core::fmt::Result">Result</a></h4></section></summary><divclass='docblock'><p>Formats the value using the given formatter. <ahref="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-Deserialize%3C%27de%3E-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_settings/settings/backlog.rs.html#39-70">source</a></span><ahref="#impl-Deserialize%3C%27de%3E-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl<'de><aclass="trait"href="https://docs.rs/serde/1.0.142/serde/de/trait.Deserialize.html"title="trait serde::de::Deserialize">Deserialize</a><'de> for <aclass="enum"href="enum.Backlog.html"title="enum actix_settings::Backlog">Backlog</a></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.deserialize"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_settings/settings/backlog.rs.html#40-69">source</a></span><ahref="#method.deserialize"class="anchor"></a><h4class="code-header">fn <ahref="https://docs.rs/serde/1.0.142/serde/de/trait.Deserialize.html#tymethod.deserialize"class="fnname">deserialize</a><D>(deserializer: D) -><aclass="enum"href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html"title="enum core::result::Result">Result</a><Self, D::<aclass="associatedtype"href="https://docs.rs/serde/1.0.142/serde/de/trait.Deserializer.html#associatedtype.Error"title="type serde::de::Deserializer::Error">Error</a>><spanclass="where fmt-newline">where<br> D: <aclass="trait"href="https://docs.rs/serde/1.0.142/serde/de/trait.Deserializer.html"title="trait serde::de::Deserializer">Deserializer</a><'de>, </span></h4></section></summary><divclass='docblock'><p>Deserialize this value from the given Serde deserializer. <ahref="https://docs.rs/serde/1.0.142/serde/de/trait.Deserialize.html#tymethod.deserialize">Read more</a></p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-Hash-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_settings/settings/backlog.rs.html#15">source</a></span><ahref="#impl-Hash-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl <aclass="trait"href="https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html"title="trait core::hash::Hash">Hash</a> for <aclass="enum"href="enum.Backlog.html"title="enum actix_settings::Backlog">Backlog</a></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.hash"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_settings/settings/backlog.rs.html#15">source</a></span><ahref="#method.hash"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html#tymethod.hash"class="fnname">hash</a><__H: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/hash/trait.Hasher.html"title="trait core::hash::Hasher">Hasher</a>>(&self, state: <aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>__H)</h4></section></summary><divclass='docblock'><p>Feeds this value into the given <ahref="https://doc.rust-lang.org/nightly/core/hash/trait.Hasher.html"title="Hasher"><code>Hasher</code></a>. <ahref="https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html#tymethod.hash">Read more</a></p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.hash_slice"class="method trait-impl has-srclink"><spanclass="rightside"><spanclass="since"title="Stable since Rust version 1.3.0">1.3.0</span> · <aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/hash/mod.rs.html#237-239">source</a></span><ahref="#method.hash_slice"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html#method.hash_slice"class="fnname">hash_slice</a><H>(data: &<aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[Self]</a>, state: <aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>H) <spanclass="where fmt-newline">where<br> H: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/hash/trait.Hasher.html"title="trait core::hash::Hasher">Hasher</a>, </span></h4></section></summary><divclass='docblock'><p>Feeds a slice of this type into the given <ahref="https://doc.rust-lang.org/nightly/core/hash/trait.Hasher.html"title="Hasher"><code>Hasher</code></a>. <ahref="https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html#method.hash_slice">Read more</a></p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-Parse-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_settings/settings/backlog.rs.html#24-37">source</a></span><ahref="#impl-Parse-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl <aclass="trait"href="trait.Parse.html"title="trait actix_settings::Parse">Parse</a> for <aclass="enum"href="enum.Backlog.html"title="enum actix_settings::Backlog">Backlog</a></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.parse"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_settings/settings/backlog.rs.html#25-36">source</a></span><ahref="#method.parse"class="anchor"></a><h4class="code-header">fn <ahref="trait.Parse.html#tymethod.parse"class="fnname">parse</a>(string: &<aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -><aclass="type"href="type.AtResult.html"title="type actix_settings::AtResult">AtResult</a><Self></h4></section></summary><divclass='docblock'><p>Parse <code>Self</code> from <code>string</code>.</p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-PartialEq%3CBacklog%3E-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_settings/settings/backlog.rs.html#15">source</a></span><ahref="#impl-PartialEq%3CBacklog%3E-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl <aclass="trait"href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html"title="trait core::cmp::PartialEq">PartialEq</a><<aclass="enum"href="enum.Backlog.html"title="enum actix_settings::Backlog">Backlog</a>> for <aclass="enum"href="enum.Backlog.html"title="enum actix_settings::Backlog">Backlog</a></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.eq"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_settings/settings/backlog.rs.html#15">source</a></span><ahref="#method.eq"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq"class="fnname">eq</a>(&self, other: &<aclass="enum"href="enum.Backlog.html"title="enum actix_settings::Backlog">Backlog</a>) -><aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></h4></section></summary><divclass='docblock'><p>This method tests for <code>self</code> and <code>other</code> values to be equal, and is used
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><sectionid="impl-Borrow%3CT%3E-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#209">source</a></span><ahref="#impl-Borrow%3CT%3E-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl<T><aclass="trait"href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html"title="trait core::borrow::Borrow">Borrow</a><T> for T <spanclass="where fmt-newline">where<br> T: ?<aclass="trait"href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html"title="trait core::marker::Sized">Sized</a>, </span></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.borrow"class="method trait-impl has-srclink"><spanclass="rightside"><spanclass="since"title="const unstable">const: <ahref="https://github.com/rust-lang/rust/issues/91522"title="Tracking issue for const_borrow">unstable</a></span> · <aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#211">source</a></span><ahref="#method.borrow"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow"class="fnname">borrow</a>(&self) -><aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T</h4></section></summary><divclass='docblock'><p>Immutably borrows from an owned value. <ahref="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><sectionid="impl-BorrowMut%3CT%3E-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#218">source</a></span><ahref="#impl-BorrowMut%3CT%3E-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl<T><aclass="trait"href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html"title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T <spanclass="where fmt-newline">where<br> T: ?<aclass="trait"href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html"title="trait core::marker::Sized">Sized</a>, </span></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.borrow_mut"class="method trait-impl has-srclink"><spanclass="rightside"><spanclass="since"title="const unstable">const: <ahref="https://github.com/rust-lang/rust/issues/91522"title="Tracking issue for const_borrow">unstable</a></span> · <aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#219">source</a></span><ahref="#method.borrow_mut"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut"class="fnname">borrow_mut</a>(&mut self) -><aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T</h4></section></summary><divclass='docblock'><p>Mutably borrows from an owned value. <ahref="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><sectionid="impl-CallHasher-for-Backlog"class="impl has-srclink"><ahref="#impl-CallHasher-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl<T> CallHasher for T <spanclass="where fmt-newline">where<br> T: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html"title="trait core::hash::Hash">Hash</a> + ?<aclass="trait"href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html"title="trait core::marker::Sized">Sized</a>, </span></h3></section></summary><divclass="impl-items"><sectionid="method.get_hash"class="method trait-impl has-srclink"><ahref="#method.get_hash"class="anchor"></a><h4class="code-header">default fn <aclass="fnname">get_hash</a><H, B>(value: <aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>H, build_hasher: <aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>B) -><aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a><spanclass="where fmt-newline">where<br> H: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html"title="trait core::hash::Hash">Hash</a> + ?<aclass="trait"href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html"title="trait core::marker::Sized">Sized</a>,<br> B: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/hash/trait.BuildHasher.html"title="trait core::hash::BuildHasher">BuildHasher</a>, </span></h4></section></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><sectionid="impl-Equivalent%3CK%3E-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://docs.rs/indexmap/1/src/indexmap/equivalent.rs.html#18">source</a></span><ahref="#impl-Equivalent%3CK%3E-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl<Q, K><aclass="trait"href="https://docs.rs/indexmap/1/indexmap/equivalent/trait.Equivalent.html"title="trait indexmap::equivalent::Equivalent">Equivalent</a><K> for Q <spanclass="where fmt-newline">where<br> Q: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/cmp/trait.Eq.html"title="trait core::cmp::Eq">Eq</a> + ?<aclass="trait"href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html"title="trait core::marker::Sized">Sized</a>,<br> K: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html"title="trait core::borrow::Borrow">Borrow</a><Q> + ?<aclass="trait"href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html"title="trait core::marker::Sized">Sized</a>, </span></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.equivalent"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://docs.rs/indexmap/1/src/indexmap/equivalent.rs.html#24">source</a></span><ahref="#method.equivalent"class="anchor"></a><h4class="code-header">fn <ahref="https://docs.rs/indexmap/1/indexmap/equivalent/trait.Equivalent.html#tymethod.equivalent"class="fnname">equivalent</a>(&self, key: <aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>K) -><aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></h4></section></summary><divclass='docblock'><p>Compare self to <code>key</code> and return <code>true</code> if they are equal.</p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><sectionid="impl-From%3CT%3E-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#557">source</a></span><ahref="#impl-From%3CT%3E-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl<T><aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html"title="trait core::convert::From">From</a><T> for T</h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.from"class="method trait-impl has-srclink"><spanclass="rightside"><spanclass="since"title="const unstable">const: <ahref="https://github.com/rust-lang/rust/issues/88674"title="Tracking issue for const_convert">unstable</a></span> · <aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#559">source</a></span><ahref="#method.from"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from"class="fnname">from</a>(t: T) -> T</h4></section></summary><divclass="docblock"><p>Returns the argument unchanged.</p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><sectionid="impl-Instrument-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://docs.rs/tracing/0.1.36/src/tracing/instrument.rs.html#276">source</a></span><ahref="#impl-Instrument-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl<T><aclass="trait"href="https://docs.rs/tracing/0.1.36/tracing/instrument/trait.Instrument.html"title="trait tracing::instrument::Instrument">Instrument</a> for T</h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.instrument"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://docs.rs/tracing/0.1.36/src/tracing/instrument.rs.html#82">source</a></span><ahref="#method.instrument"class="anchor"></a><h4class="code-header">fn <ahref="https://docs.rs/tracing/0.1.36/tracing/instrument/trait.Instrument.html#method.instrument"class="fnname">instrument</a>(self, span: <aclass="struct"href="https://docs.rs/tracing/0.1.36/tracing/span/struct.Span.html"title="struct tracing::span::Span">Span</a>) -><aclass="struct"href="https://docs.rs/tracing/0.1.36/tracing/instrument/struct.Instrumented.html"title="struct tracing::instrument::Instrumented">Instrumented</a><Self></h4></section></summary><divclass='docblock'><p>Instruments this type with the provided <ahref="https://docs.rs/tracing/0.1.36/tracing/span/struct.Span.html"title="Span"><code>Span</code></a>, returning an
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.in_current_span"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://docs.rs/tracing/0.1.36/src/tracing/instrument.rs.html#121">source</a></span><ahref="#method.in_current_span"class="anchor"></a><h4class="code-header">fn <ahref="https://docs.rs/tracing/0.1.36/tracing/instrument/trait.Instrument.html#method.in_current_span"class="fnname">in_current_span</a>(self) -><aclass="struct"href="https://docs.rs/tracing/0.1.36/tracing/instrument/struct.Instrumented.html"title="struct tracing::instrument::Instrumented">Instrumented</a><Self></h4></section></summary><divclass='docblock'><p>Instruments this type with the <ahref="https://docs.rs/tracing/0.1.36/tracing/span/struct.Span.html#method.current">current</a><ahref="https://docs.rs/tracing/0.1.36/tracing/span/struct.Span.html"><code>Span</code></a>, returning an
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><sectionid="impl-Into%3CU%3E-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#541">source</a></span><ahref="#impl-Into%3CU%3E-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html"title="trait core::convert::Into">Into</a><U> for T <spanclass="where fmt-newline">where<br> U: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html"title="trait core::convert::From">From</a><T>, </span></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.into"class="method trait-impl has-srclink"><spanclass="rightside"><spanclass="since"title="const unstable">const: <ahref="https://github.com/rust-lang/rust/issues/88674"title="Tracking issue for const_convert">unstable</a></span> · <aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#549">source</a></span><ahref="#method.into"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into"class="fnname">into</a>(self) -> U</h4></section></summary><divclass="docblock"><p>Calls <code>U::from(self)</code>.</p>
<p>That is, this conversion is whatever the implementation of
<code><ahref="https://doc.rust-lang.org/nightly/core/convert/trait.From.html"title="From">From</a><T> for U</code> chooses to do.</p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><sectionid="impl-Same%3CT%3E-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://docs.rs/typenum/1.15.0/src/typenum/type_operators.rs.html#34">source</a></span><ahref="#impl-Same%3CT%3E-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl<T><aclass="trait"href="https://docs.rs/typenum/1.15.0/typenum/type_operators/trait.Same.html"title="trait typenum::type_operators::Same">Same</a><T> for T</h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle"open><summary><sectionid="associatedtype.Output"class="associatedtype trait-impl has-srclink"><ahref="#associatedtype.Output"class="anchor"></a><h4class="code-header">type <ahref="https://docs.rs/typenum/1.15.0/typenum/type_operators/trait.Same.html#associatedtype.Output"class="associatedtype">Output</a> = T</h4></section></summary><divclass='docblock'><p>Should always be <code>Self</code></p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><sectionid="impl-ToOwned-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#83">source</a></span><ahref="#impl-ToOwned-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl<T><aclass="trait"href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html"title="trait alloc::borrow::ToOwned">ToOwned</a> for T <spanclass="where fmt-newline">where<br> T: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html"title="trait core::clone::Clone">Clone</a>, </span></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle"open><summary><sectionid="associatedtype.Owned"class="associatedtype trait-impl has-srclink"><ahref="#associatedtype.Owned"class="anchor"></a><h4class="code-header">type <ahref="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#associatedtype.Owned"class="associatedtype">Owned</a> = T</h4></section></summary><divclass='docblock'><p>The resulting type after obtaining ownership.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.to_owned"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#88">source</a></span><ahref="#method.to_owned"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned"class="fnname">to_owned</a>(&self) -> T</h4></section></summary><divclass='docblock'><p>Creates owned data from borrowed data, usually by cloning. <ahref="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.clone_into"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#92">source</a></span><ahref="#method.clone_into"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into"class="fnname">clone_into</a>(&self, target: <aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T)</h4></section></summary><divclass='docblock'><p>Uses borrowed data to replace owned data, usually by cloning. <ahref="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><sectionid="impl-TryFrom%3CU%3E-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#598">source</a></span><ahref="#impl-TryFrom%3CU%3E-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><U> for T <spanclass="where fmt-newline">where<br> U: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html"title="trait core::convert::Into">Into</a><T>, </span></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle"open><summary><sectionid="associatedtype.Error"class="associatedtype trait-impl has-srclink"><ahref="#associatedtype.Error"class="anchor"></a><h4class="code-header">type <ahref="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error"class="associatedtype">Error</a> = <aclass="enum"href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html"title="enum core::convert::Infallible">Infallible</a></h4></section></summary><divclass='docblock'><p>The type returned in the event of a conversion error.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.try_from"class="method trait-impl has-srclink"><spanclass="rightside"><spanclass="since"title="const unstable">const: <ahref="https://github.com/rust-lang/rust/issues/88674"title="Tracking issue for const_convert">unstable</a></span> · <aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#604">source</a></span><ahref="#method.try_from"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from"class="fnname">try_from</a>(value: U) -><aclass="enum"href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html"title="enum core::result::Result">Result</a><T, <T as <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><U>>::<aclass="associatedtype"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><divclass='docblock'><p>Performs the conversion.</p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><sectionid="impl-TryInto%3CU%3E-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#583">source</a></span><ahref="#impl-TryInto%3CU%3E-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html"title="trait core::convert::TryInto">TryInto</a><U> for T <spanclass="where fmt-newline">where<br> U: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>, </span></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle"open><summary><sectionid="associatedtype.Error-1"class="associatedtype trait-impl has-srclink"><ahref="#associatedtype.Error-1"class="anchor"></a><h4class="code-header">type <ahref="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error"class="associatedtype">Error</a> = <U as <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="associatedtype"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><divclass='docblock'><p>The type returned in the event of a conversion error.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.try_into"class="method trait-impl has-srclink"><spanclass="rightside"><spanclass="since"title="const unstable">const: <ahref="https://github.com/rust-lang/rust/issues/88674"title="Tracking issue for const_convert">unstable</a></span> · <aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#589">source</a></span><ahref="#method.try_into"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into"class="fnname">try_into</a>(self) -><aclass="enum"href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html"title="enum core::result::Result">Result</a><U, <U as <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="associatedtype"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><divclass='docblock'><p>Performs the conversion.</p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><sectionid="impl-VZip%3CV%3E-for-Backlog"class="impl has-srclink"><ahref="#impl-VZip%3CV%3E-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl<V, T> VZip<V> for T <spanclass="where fmt-newline">where<br> V: MultiLane<T>, </span></h3></section></summary><divclass="impl-items"><sectionid="method.vzip"class="method trait-impl has-srclink"><ahref="#method.vzip"class="anchor"></a><h4class="code-header">fn <aclass="fnname">vzip</a>(self) -> V</h4></section></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><sectionid="impl-WithSubscriber-for-Backlog"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://docs.rs/tracing/0.1.36/src/tracing/instrument.rs.html#334">source</a></span><ahref="#impl-WithSubscriber-for-Backlog"class="anchor"></a><h3class="code-header in-band">impl<T><aclass="trait"href="https://docs.rs/tracing/0.1.36/tracing/instrument/trait.WithSubscriber.html"title="trait tracing::instrument::WithSubscriber">WithSubscriber</a> for T</h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.with_subscriber"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://docs.rs/tracing/0.1.36/src/tracing/instrument.rs.html#169-171">source</a></span><ahref="#method.with_subscriber"class="anchor"></a><h4class="code-header">fn <ahref="https://docs.rs/tracing/0.1.36/tracing/instrument/trait.WithSubscriber.html#method.with_subscriber"class="fnname">with_subscriber</a><S>(self, subscriber: S) -><aclass="struct"href="https://docs.rs/tracing/0.1.36/tracing/instrument/struct.WithDispatch.html"title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self><spanclass="where fmt-newline">where<br> S: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html"title="trait core::convert::Into">Into</a><<aclass="struct"href="https://docs.rs/tracing-core/0.1.22/tracing_core/dispatcher/struct.Dispatch.html"title="struct tracing_core::dispatcher::Dispatch">Dispatch</a>>, </span></h4></section></summary><divclass='docblock'><p>Attaches the provided <ahref="https://docs.rs/tracing-core/0.1.22/tracing_core/subscriber/trait.Subscriber.html"><code>Subscriber</code></a> to this type, returning a
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.with_current_subscriber"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://docs.rs/tracing/0.1.36/src/tracing/instrument.rs.html#221">source</a></span><ahref="#method.with_current_subscriber"class="anchor"></a><h4class="code-header">fn <ahref="https://docs.rs/tracing/0.1.36/tracing/instrument/trait.WithSubscriber.html#method.with_current_subscriber"class="fnname">with_current_subscriber</a>(self) -><aclass="struct"href="https://docs.rs/tracing/0.1.36/tracing/instrument/struct.WithDispatch.html"title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self></h4></section></summary><divclass='docblock'><p>Attaches the current <ahref="https://docs.rs/tracing/0.1.36/tracing/dispatcher/index.html#setting-the-default-subscriber">default</a><ahref="https://docs.rs/tracing-core/0.1.22/tracing_core/subscriber/trait.Subscriber.html"><code>Subscriber</code></a> to this type, returning a
