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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="Configures and constructs `Subscriber`s."><title>SubscriberBuilder in tracing_subscriber::fmt - 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="../../" 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class="sidebar-menu-toggle" title="show sidebar"></button><a class="logo-container" href="../../tracing_subscriber/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_subscriber/index.html"><img src="https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png" alt="logo"></a><h2><a href="../../tracing_subscriber/index.html">tracing_subscriber</a><span class="version">0.3.18</span></h2></div><h2 class="location"><a href="#">SubscriberBuilder</a></h2><div class="sidebar-elems"><section><h3><a href="#implementations">Methods</a></h3><ul class="block method"><li><a href="#method.compact">compact</a></li><li><a href="#method.event_format">event_format</a></li><li><a href="#method.finish">finish</a></li><li><a href="#method.fmt_fields">fmt_fields</a></li><li><a href="#method.init">init</a></li><li><a href="#method.log_internal_errors">log_internal_errors</a></li><li><a href="#method.map_event_format">map_event_format</a></li><li><a href="#method.map_fmt_fields">map_fmt_fields</a></li><li><a href="#method.map_writer">map_writer</a></li><li><a href="#method.pretty">pretty</a></li><li><a href="#method.reload_handle">reload_handle</a></li><li><a href="#method.try_init">try_init</a></li><li><a href="#method.with_ansi">with_ansi</a></li><li><a href="#method.with_env_filter">with_env_filter</a></li><li><a href="#method.with_file">with_file</a></li><li><a href="#method.with_filter_reloading">with_filter_reloading</a></li><li><a href="#method.with_level">with_level</a></li><li><a href="#method.with_line_number">with_line_number</a></li><li><a href="#method.with_max_level">with_max_level</a></li><li><a href="#method.with_span_events">with_span_events</a></li><li><a href="#method.with_target">with_target</a></li><li><a href="#method.with_test_writer">with_test_writer</a></li><li><a href="#method.with_thread_ids">with_thread_ids</a></li><li><a href="#method.with_thread_names">with_thread_names</a></li><li><a href="#method.with_timer">with_timer</a></li><li><a href="#method.with_writer">with_writer</a></li><li><a href="#method.without_time">without_time</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block trait-implementation"><li><a href="#impl-Debug-for-SubscriberBuilder%3CN,+E,+F,+W%3E">Debug</a></li><li><a href="#impl-Default-for-SubscriberBuilder">Default</a></li><li><a href="#impl-From%3CSubscriberBuilder%3CN,+E,+F,+W%3E%3E-for-Dispatch">From<SubscriberBuilder<N, E, F, W>></a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block synthetic-implementation"><li><a href="#impl-Freeze-for-SubscriberBuilder%3CN,+E,+F,+W%3E">Freeze</a></li><li><a href="#impl-RefUnwindSafe-for-SubscriberBuilder%3CN,+E,+F,+W%3E">RefUnwindSafe</a></li><li><a href="#impl-Send-for-SubscriberBuilder%3CN,+E,+F,+W%3E">Send</a></li><li><a href="#impl-Sync-for-SubscriberBuilder%3CN,+E,+F,+W%3E">Sync</a></li><li><a href="#impl-Unpin-for-SubscriberBuilder%3CN,+E,+F,+W%3E">Unpin</a></li><li><a href="#impl-UnwindSafe-for-SubscriberBuilder%3CN,+E,+F,+W%3E">UnwindSafe</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block blanket-implementation"><li><a href="#impl-Any-for-T">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-T">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-T">BorrowMut<T></a></li><li><a href="#impl-From%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-SubscriberInitExt-for-T">SubscriberInitExt</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 tracing_subscriber::fmt</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_subscriber</a>::<wbr><a href="index.html">fmt</a>::<wbr><a class="struct" href="#">SubscriberBuilder</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_subscriber/fmt/mod.rs.html#247-255">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>−</span>]</button></span></div><pre class="rust item-decl"><code>pub struct SubscriberBuilder<N = <a class="struct" href="format/struct.DefaultFields.html" title="struct tracing_subscriber::fmt::format::DefaultFields">DefaultFields</a>, E = <a class="struct" href="format/struct.Format.html" title="struct tracing_subscriber::fmt::format::Format">Format</a><<a class="struct" href="format/struct.Full.html" title="struct tracing_subscriber::fmt::format::Full">Full</a>>, F = <a class="struct" href="../filter/struct.LevelFilter.html" title="struct tracing_subscriber::filter::LevelFilter">LevelFilter</a>, W = <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.fn.html">fn</a>() -> <a class="struct" href="https://doc.rust-lang.org/1.80.0/std/io/stdio/struct.Stdout.html" title="struct std::io::stdio::Stdout">Stdout</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>Configures and constructs <code>Subscriber</code>s.</p>
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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-SubscriberBuilder%3CN,+E,+F,+W%3E" class="impl"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#474-519">source</a><a href="#impl-SubscriberBuilder%3CN,+E,+F,+W%3E" class="anchor">§</a><h3 class="code-header">impl<N, E, F, W> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, F, W><div class="where">where
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N: for<'writer> <a class="trait" href="trait.FormatFields.html" title="trait tracing_subscriber::fmt::FormatFields">FormatFields</a><'writer> + 'static,
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E: <a class="trait" href="trait.FormatEvent.html" title="trait tracing_subscriber::fmt::FormatEvent">FormatEvent</a><<a class="struct" href="../registry/struct.Registry.html" title="struct tracing_subscriber::registry::Registry">Registry</a>, N> + 'static,
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||
W: for<'writer> <a class="trait" href="trait.MakeWriter.html" title="trait tracing_subscriber::fmt::MakeWriter">MakeWriter</a><'writer> + 'static,
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||
F: <a class="trait" href="../layer/trait.Layer.html" title="trait tracing_subscriber::layer::Layer">Layer</a><<a class="type" href="type.Formatter.html" title="type tracing_subscriber::fmt::Formatter">Formatter</a><N, E, W>> + <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</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> + 'static,
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<a class="struct" href="struct.Layer.html" title="struct tracing_subscriber::fmt::Layer">Layer</a><<a class="struct" href="../registry/struct.Registry.html" title="struct tracing_subscriber::registry::Registry">Registry</a>, N, E, W>: <a class="trait" href="../layer/trait.Layer.html" title="trait tracing_subscriber::layer::Layer">Layer</a><<a class="struct" href="../registry/struct.Registry.html" title="struct tracing_subscriber::registry::Registry">Registry</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> + <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.finish" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#483-488">source</a><h4 class="code-header">pub fn <a href="#method.finish" class="fn">finish</a>(self) -> <a class="struct" href="struct.Subscriber.html" title="struct tracing_subscriber::fmt::Subscriber">Subscriber</a><N, E, F, W></h4></section></summary><div class="docblock"><p>Finish the builder, returning a new <code>FmtSubscriber</code>.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.try_init" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#500-505">source</a><h4 class="code-header">pub fn <a href="#method.try_init" class="fn">try_init</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><<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/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><dyn <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/error/trait.Error.html" title="trait core::error::Error">Error</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> + <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static>></h4></section></summary><div class="docblock"><p>Install this Subscriber as the global default if one is
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not already set.</p>
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<p>If the <code>tracing-log</code> feature is enabled, this will also install
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the LogTracer to convert <code>Log</code> records into <code>tracing</code> <code>Event</code>s.</p>
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<h5 id="errors"><a class="doc-anchor" href="#errors">§</a>Errors</h5>
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<p>Returns an Error if the initialization was unsuccessful, likely
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because a global subscriber was already installed by another
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call to <code>try_init</code>.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.init" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#515-518">source</a><h4 class="code-header">pub fn <a href="#method.init" class="fn">init</a>(self)</h4></section></summary><div class="docblock"><p>Install this Subscriber as the global default.</p>
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<p>If the <code>tracing-log</code> feature is enabled, this will also install
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the LogTracer to convert <code>Log</code> records into <code>tracing</code> <code>Event</code>s.</p>
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<h5 id="panics"><a class="doc-anchor" href="#panics">§</a>Panics</h5>
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<p>Panics if the initialization was unsuccessful, likely because a
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global subscriber was already installed by another call to <code>try_init</code>.</p>
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</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-SubscriberBuilder%3CN,+Format%3CL,+T%3E,+F,+W%3E" class="impl"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#534-779">source</a><a href="#impl-SubscriberBuilder%3CN,+Format%3CL,+T%3E,+F,+W%3E" class="anchor">§</a><h3 class="code-header">impl<N, L, T, F, W> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, <a class="struct" href="format/struct.Format.html" title="struct tracing_subscriber::fmt::format::Format">Format</a><L, T>, F, W><div class="where">where
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N: for<'writer> <a class="trait" href="trait.FormatFields.html" title="trait tracing_subscriber::fmt::FormatFields">FormatFields</a><'writer> + 'static,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.with_timer" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#552-557">source</a><h4 class="code-header">pub fn <a href="#method.with_timer" class="fn">with_timer</a><T2>(
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self,
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timer: T2,
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) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, <a class="struct" href="format/struct.Format.html" title="struct tracing_subscriber::fmt::format::Format">Format</a><L, T2>, F, W></h4></section></summary><div class="docblock"><p>Use the given <a href="time/trait.FormatTime.html" title="trait tracing_subscriber::fmt::time::FormatTime"><code>timer</code></a> for log message timestamps.</p>
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<p>See the <a href="time/index.html" title="mod tracing_subscriber::fmt::time"><code>time</code> module</a> for the provided timer implementations.</p>
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<p>Note that using the <code>"time</code>“” feature flag enables the
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additional time formatters <a href="time::UtcTime"><code>UtcTime</code></a> and <a href="time::LocalTime"><code>LocalTime</code></a>, which use the
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<a href="https://docs.rs/time/0.3"><code>time</code> crate</a> to provide more sophisticated timestamp formatting
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options.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.without_time" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#560-565">source</a><h4 class="code-header">pub fn <a href="#method.without_time" class="fn">without_time</a>(self) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, <a class="struct" href="format/struct.Format.html" title="struct tracing_subscriber::fmt::format::Format">Format</a><L, <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.unit.html">()</a>>, F, W></h4></section></summary><div class="docblock"><p>Do not emit timestamps with log messages.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.with_span_events" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#608-613">source</a><h4 class="code-header">pub fn <a href="#method.with_span_events" class="fn">with_span_events</a>(self, kind: <a class="struct" href="format/struct.FmtSpan.html" title="struct tracing_subscriber::fmt::format::FmtSpan">FmtSpan</a>) -> Self</h4></section></summary><div class="docblock"><p>Configures how synthesized events are emitted at points in the <a href="https://docs.rs/tracing/latest/tracing/span/index.html#the-span-lifecycle">span
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lifecycle</a>.</p>
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<p>The following options are available:</p>
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<ul>
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<li><code>FmtSpan::NONE</code>: No events will be synthesized when spans are
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created, entered, exited, or closed. Data from spans will still be
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included as the context for formatted events. This is the default.</li>
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<li><code>FmtSpan::NEW</code>: An event will be synthesized when spans are created.</li>
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<li><code>FmtSpan::ENTER</code>: An event will be synthesized when spans are entered.</li>
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<li><code>FmtSpan::EXIT</code>: An event will be synthesized when spans are exited.</li>
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<li><code>FmtSpan::CLOSE</code>: An event will be synthesized when a span closes. If
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||
<a href="struct.SubscriberBuilder.html#method.without_time" title="method tracing_subscriber::fmt::SubscriberBuilder::without_time">timestamps are enabled</a> for this formatter, the generated
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event will contain fields with the span’s <em>busy time</em> (the total
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time for which it was entered) and <em>idle time</em> (the total time that
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the span existed but was not entered).</li>
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<li><code>FmtSpan::ACTIVE</code>: An event will be synthesized when spans are entered
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or exited.</li>
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<li><code>FmtSpan::FULL</code>: Events will be synthesized whenever a span is
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created, entered, exited, or closed. If timestamps are enabled, the
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close event will contain the span’s busy and idle time, as
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described above.</li>
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</ul>
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<p>The options can be enabled in any combination. For instance, the following
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will synthesize events whenever spans are created and closed:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>tracing_subscriber::fmt::format::FmtSpan;
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<span class="kw">use </span>tracing_subscriber::fmt;
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<span class="kw">let </span>subscriber = fmt()
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.with_span_events(FmtSpan::NEW | FmtSpan::CLOSE)
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.finish();</code></pre></div>
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<p>Note that the generated events will only be part of the log output by
|
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this formatter; they will not be recorded by other <code>Subscriber</code>s or by
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<code>Layer</code>s added to this subscriber.</p>
|
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</div></details><details class="toggle method-toggle" open><summary><section id="method.with_ansi" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#632-637">source</a><h4 class="code-header">pub fn <a href="#method.with_ansi" class="fn">with_ansi</a>(self, ansi: <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a>) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, <a class="struct" href="format/struct.Format.html" title="struct tracing_subscriber::fmt::format::Format">Format</a><L, T>, F, W></h4></section></summary><div class="docblock"><p>Sets whether or not the formatter emits ANSI terminal escape codes
|
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for colors and other text formatting.</p>
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<p>Enabling ANSI escapes (calling <code>with_ansi(true)</code>) requires the “ansi”
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crate feature flag. Calling <code>with_ansi(true)</code> without the “ansi”
|
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feature flag enabled will panic if debug assertions are enabled, or
|
||
print a warning otherwise.</p>
|
||
<p>This method itself is still available without the feature flag. This
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is to allow ANSI escape codes to be explicitly <em>disabled</em> without
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||
having to opt-in to the dependencies required to emit ANSI formatting.
|
||
This way, code which constructs a formatter that should never emit
|
||
ANSI escape codes can ensure that they are not used, regardless of
|
||
whether or not other crates in the dependency graph enable the “ansi”
|
||
feature flag.</p>
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||
</div></details><details class="toggle method-toggle" open><summary><section id="method.log_internal_errors" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#650-658">source</a><h4 class="code-header">pub fn <a href="#method.log_internal_errors" class="fn">log_internal_errors</a>(
|
||
self,
|
||
log_internal_errors: <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a>,
|
||
) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, <a class="struct" href="format/struct.Format.html" title="struct tracing_subscriber::fmt::format::Format">Format</a><L, T>, F, W></h4></section></summary><div class="docblock"><p>Sets whether to write errors from <a href="trait.FormatEvent.html" title="trait tracing_subscriber::fmt::FormatEvent"><code>FormatEvent</code></a> to the writer.
|
||
Defaults to true.</p>
|
||
<p>By default, <code>fmt::Layer</code> will write any <code>FormatEvent</code>-internal errors to
|
||
the writer. These errors are unlikely and will only occur if there is a
|
||
bug in the <code>FormatEvent</code> implementation or its dependencies.</p>
|
||
<p>If writing to the writer fails, the error message is printed to stderr
|
||
as a fallback.</p>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_target" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#661-669">source</a><h4 class="code-header">pub fn <a href="#method.with_target" class="fn">with_target</a>(
|
||
self,
|
||
display_target: <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a>,
|
||
) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, <a class="struct" href="format/struct.Format.html" title="struct tracing_subscriber::fmt::format::Format">Format</a><L, T>, F, W></h4></section></summary><div class="docblock"><p>Sets whether or not an event’s target is displayed.</p>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_file" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#675-683">source</a><h4 class="code-header">pub fn <a href="#method.with_file" class="fn">with_file</a>(
|
||
self,
|
||
display_filename: <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a>,
|
||
) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, <a class="struct" href="format/struct.Format.html" title="struct tracing_subscriber::fmt::format::Format">Format</a><L, T>, F, W></h4></section></summary><div class="docblock"><p>Sets whether or not an event’s <a href="../../tracing_core/metadata/struct.Metadata.html#method.file" title="method tracing_core::metadata::Metadata::file">source code file path</a> is
|
||
displayed.</p>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_line_number" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#689-697">source</a><h4 class="code-header">pub fn <a href="#method.with_line_number" class="fn">with_line_number</a>(
|
||
self,
|
||
display_line_number: <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a>,
|
||
) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, <a class="struct" href="format/struct.Format.html" title="struct tracing_subscriber::fmt::format::Format">Format</a><L, T>, F, W></h4></section></summary><div class="docblock"><p>Sets whether or not an event’s <a href="../../tracing_core/metadata/struct.Metadata.html#method.line" title="method tracing_core::metadata::Metadata::line">source code line number</a> is
|
||
displayed.</p>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_level" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#700-708">source</a><h4 class="code-header">pub fn <a href="#method.with_level" class="fn">with_level</a>(
|
||
self,
|
||
display_level: <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a>,
|
||
) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, <a class="struct" href="format/struct.Format.html" title="struct tracing_subscriber::fmt::format::Format">Format</a><L, T>, F, W></h4></section></summary><div class="docblock"><p>Sets whether or not an event’s level is displayed.</p>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_thread_names" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#714-722">source</a><h4 class="code-header">pub fn <a href="#method.with_thread_names" class="fn">with_thread_names</a>(
|
||
self,
|
||
display_thread_names: <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a>,
|
||
) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, <a class="struct" href="format/struct.Format.html" title="struct tracing_subscriber::fmt::format::Format">Format</a><L, T>, F, W></h4></section></summary><div class="docblock"><p>Sets whether or not the <a href="https://doc.rust-lang.org/1.80.0/std/thread/index.html#naming-threads" title="mod std::thread">name</a> of the current thread is displayed
|
||
when formatting events.</p>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_thread_ids" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#728-736">source</a><h4 class="code-header">pub fn <a href="#method.with_thread_ids" class="fn">with_thread_ids</a>(
|
||
self,
|
||
display_thread_ids: <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a>,
|
||
) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, <a class="struct" href="format/struct.Format.html" title="struct tracing_subscriber::fmt::format::Format">Format</a><L, T>, F, W></h4></section></summary><div class="docblock"><p>Sets whether or not the <a href="https://doc.rust-lang.org/1.80.0/std/thread/struct.ThreadId.html" title="struct std::thread::ThreadId">thread ID</a> of the current thread is displayed
|
||
when formatting events.</p>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.compact" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#741-749">source</a><h4 class="code-header">pub fn <a href="#method.compact" class="fn">compact</a>(self) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, <a class="struct" href="format/struct.Format.html" title="struct tracing_subscriber::fmt::format::Format">Format</a><<a class="struct" href="format/struct.Compact.html" title="struct tracing_subscriber::fmt::format::Compact">Compact</a>, T>, F, W><div class="where">where
|
||
N: for<'writer> <a class="trait" href="trait.FormatFields.html" title="trait tracing_subscriber::fmt::FormatFields">FormatFields</a><'writer> + 'static,</div></h4></section></summary><div class="docblock"><p>Sets the subscriber being built to use a less verbose formatter.</p>
|
||
<p>See <a href="format/struct.Compact.html" title="struct tracing_subscriber::fmt::format::Compact"><code>format::Compact</code></a>.</p>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.pretty" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#754-761">source</a><h4 class="code-header">pub fn <a href="#method.pretty" class="fn">pretty</a>(self) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><<a class="struct" href="format/struct.Pretty.html" title="struct tracing_subscriber::fmt::format::Pretty">Pretty</a>, <a class="struct" href="format/struct.Format.html" title="struct tracing_subscriber::fmt::format::Format">Format</a><<a class="struct" href="format/struct.Pretty.html" title="struct tracing_subscriber::fmt::format::Pretty">Pretty</a>, T>, F, W></h4></section></summary><div class="docblock"><p>Sets the subscriber being built to use an <a href="format/struct.Pretty.html" title="struct tracing_subscriber::fmt::format::Pretty">excessively pretty, human-readable formatter</a>.</p>
|
||
</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-SubscriberBuilder%3CN,+E,+EnvFilter,+W%3E" class="impl"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#828-844">source</a><a href="#impl-SubscriberBuilder%3CN,+E,+EnvFilter,+W%3E" class="anchor">§</a><h3 class="code-header">impl<N, E, W> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, <a class="struct" href="../filter/struct.EnvFilter.html" title="struct tracing_subscriber::filter::EnvFilter">EnvFilter</a>, W><div class="where">where
|
||
<a class="type" href="type.Formatter.html" title="type tracing_subscriber::fmt::Formatter">Formatter</a><N, E, W>: <a class="trait" href="../../tracing_core/subscriber/trait.Subscriber.html" title="trait tracing_core::subscriber::Subscriber">Subscriber</a> + 'static,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.with_filter_reloading" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#834-843">source</a><h4 class="code-header">pub fn <a href="#method.with_filter_reloading" class="fn">with_filter_reloading</a>(
|
||
self,
|
||
) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, <a class="struct" href="../reload/struct.Layer.html" title="struct tracing_subscriber::reload::Layer">Layer</a><<a class="struct" href="../filter/struct.EnvFilter.html" title="struct tracing_subscriber::filter::EnvFilter">EnvFilter</a>, <a class="type" href="type.Formatter.html" title="type tracing_subscriber::fmt::Formatter">Formatter</a><N, E, W>>, W></h4></section></summary><div class="docblock"><p>Configures the subscriber being built to allow filter reloading at
|
||
runtime.</p>
|
||
</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-SubscriberBuilder%3CN,+E,+Layer%3CEnvFilter,+Layered%3CLayer%3CRegistry,+N,+E,+W%3E,+Registry%3E%3E,+W%3E" class="impl"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#848-857">source</a><a href="#impl-SubscriberBuilder%3CN,+E,+Layer%3CEnvFilter,+Layered%3CLayer%3CRegistry,+N,+E,+W%3E,+Registry%3E%3E,+W%3E" class="anchor">§</a><h3 class="code-header">impl<N, E, W> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, <a class="struct" href="../reload/struct.Layer.html" title="struct tracing_subscriber::reload::Layer">Layer</a><<a class="struct" href="../filter/struct.EnvFilter.html" title="struct tracing_subscriber::filter::EnvFilter">EnvFilter</a>, <a class="type" href="type.Formatter.html" title="type tracing_subscriber::fmt::Formatter">Formatter</a><N, E, W>>, W><div class="where">where
|
||
<a class="type" href="type.Formatter.html" title="type tracing_subscriber::fmt::Formatter">Formatter</a><N, E, W>: <a class="trait" href="../../tracing_core/subscriber/trait.Subscriber.html" title="trait tracing_core::subscriber::Subscriber">Subscriber</a> + 'static,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.reload_handle" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#854-856">source</a><h4 class="code-header">pub fn <a href="#method.reload_handle" class="fn">reload_handle</a>(&self) -> <a class="struct" href="../reload/struct.Handle.html" title="struct tracing_subscriber::reload::Handle">Handle</a><<a class="struct" href="../filter/struct.EnvFilter.html" title="struct tracing_subscriber::filter::EnvFilter">EnvFilter</a>, <a class="type" href="type.Formatter.html" title="type tracing_subscriber::fmt::Formatter">Formatter</a><N, E, W>></h4></section></summary><div class="docblock"><p>Returns a <code>Handle</code> that may be used to reload the constructed subscriber’s
|
||
filter.</p>
|
||
</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-SubscriberBuilder%3CN,+E,+F,+W%3E-1" class="impl"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#859-1156">source</a><a href="#impl-SubscriberBuilder%3CN,+E,+F,+W%3E-1" class="anchor">§</a><h3 class="code-header">impl<N, E, F, W> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, F, W></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.fmt_fields" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#880-888">source</a><h4 class="code-header">pub fn <a href="#method.fmt_fields" class="fn">fmt_fields</a><N2>(self, fmt_fields: N2) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N2, E, F, W><div class="where">where
|
||
N2: for<'writer> <a class="trait" href="trait.FormatFields.html" title="trait tracing_subscriber::fmt::FormatFields">FormatFields</a><'writer> + 'static,</div></h4></section></summary><div class="docblock"><p>Sets the field formatter that the subscriber being built will use to record
|
||
fields.</p>
|
||
<p>For example:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>tracing_subscriber::fmt::format;
|
||
<span class="kw">use </span>tracing_subscriber::prelude::<span class="kw-2">*</span>;
|
||
|
||
<span class="kw">let </span>formatter =
|
||
<span class="comment">// Construct a custom formatter for `Debug` fields
|
||
</span>format::debug_fn(|writer, field, value| <span class="macro">write!</span>(writer, <span class="string">"{}: {:?}"</span>, field, value))
|
||
<span class="comment">// Use the `tracing_subscriber::MakeFmtExt` trait to wrap the
|
||
// formatter so that a delimiter is added between fields.
|
||
</span>.delimited(<span class="string">", "</span>);
|
||
|
||
<span class="kw">let </span>subscriber = tracing_subscriber::fmt()
|
||
.fmt_fields(formatter)
|
||
.finish();</code></pre></div>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_env_filter" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#940-952">source</a><h4 class="code-header">pub fn <a href="#method.with_env_filter" class="fn">with_env_filter</a>(
|
||
self,
|
||
filter: 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="struct" href="../filter/struct.EnvFilter.html" title="struct tracing_subscriber::filter::EnvFilter">EnvFilter</a>>,
|
||
) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, <a class="struct" href="../filter/struct.EnvFilter.html" title="struct tracing_subscriber::filter::EnvFilter">EnvFilter</a>, W><div class="where">where
|
||
<a class="type" href="type.Formatter.html" title="type tracing_subscriber::fmt::Formatter">Formatter</a><N, E, W>: <a class="trait" href="../../tracing_core/subscriber/trait.Subscriber.html" title="trait tracing_core::subscriber::Subscriber">Subscriber</a> + 'static,</div></h4></section></summary><div class="docblock"><p>Sets the <a href="../filter/struct.EnvFilter.html" title="struct tracing_subscriber::filter::EnvFilter"><code>EnvFilter</code></a> that the subscriber will use to determine if
|
||
a span or event is enabled.</p>
|
||
<p>Note that this method requires the “env-filter” feature flag to be enabled.</p>
|
||
<p>If a filter was previously set, or a maximum level was set by the
|
||
<a href="struct.SubscriberBuilder.html#method.with_max_level" title="method tracing_subscriber::fmt::SubscriberBuilder::with_max_level"><code>with_max_level</code></a> method, that value is replaced by the new filter.</p>
|
||
<h5 id="examples"><a class="doc-anchor" href="#examples">§</a>Examples</h5>
|
||
<p>Setting a filter based on the value of the <code>RUST_LOG</code> environment
|
||
variable:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>tracing_subscriber::{fmt, EnvFilter};
|
||
|
||
fmt()
|
||
.with_env_filter(EnvFilter::from_default_env())
|
||
.init();</code></pre></div>
|
||
<p>Setting a filter based on a pre-set filter directive string:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>tracing_subscriber::fmt;
|
||
|
||
fmt()
|
||
.with_env_filter(<span class="string">"my_crate=info,my_crate::my_mod=debug,[my_span]=trace"</span>)
|
||
.init();</code></pre></div>
|
||
<p>Adding additional directives to a filter constructed from an env var:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>tracing_subscriber::{fmt, filter::{EnvFilter, LevelFilter}};
|
||
|
||
<span class="kw">let </span>filter = EnvFilter::try_from_env(<span class="string">"MY_CUSTOM_FILTER_ENV_VAR"</span>)<span class="question-mark">?
|
||
</span><span class="comment">// Set the base level when not matched by other directives to WARN.
|
||
</span>.add_directive(LevelFilter::WARN.into())
|
||
<span class="comment">// Set the max level for `my_crate::my_mod` to DEBUG, overriding
|
||
// any directives parsed from the env variable.
|
||
</span>.add_directive(<span class="string">"my_crate::my_mod=debug"</span>.parse()<span class="question-mark">?</span>);
|
||
|
||
fmt()
|
||
.with_env_filter(filter)
|
||
.try_init()<span class="question-mark">?</span>;</code></pre></div>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_max_level" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#983-992">source</a><h4 class="code-header">pub fn <a href="#method.with_max_level" class="fn">with_max_level</a>(
|
||
self,
|
||
filter: 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="struct" href="../filter/struct.LevelFilter.html" title="struct tracing_subscriber::filter::LevelFilter">LevelFilter</a>>,
|
||
) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, <a class="struct" href="../filter/struct.LevelFilter.html" title="struct tracing_subscriber::filter::LevelFilter">LevelFilter</a>, W></h4></section></summary><div class="docblock"><p>Sets the maximum <a href="../../tracing_core/metadata/struct.Level.html" title="struct tracing_core::metadata::Level">verbosity level</a> that will be enabled by the
|
||
subscriber.</p>
|
||
<p>If the max level has already been set, or a <a href="../filter/struct.EnvFilter.html" title="struct tracing_subscriber::filter::EnvFilter"><code>EnvFilter</code></a> was added by
|
||
<a href="struct.SubscriberBuilder.html#method.with_env_filter" title="method tracing_subscriber::fmt::SubscriberBuilder::with_env_filter"><code>with_env_filter</code></a>, this replaces that configuration with the new
|
||
maximum level.</p>
|
||
<h5 id="examples-1"><a class="doc-anchor" href="#examples-1">§</a>Examples</h5>
|
||
<p>Enable up to the <code>DEBUG</code> verbosity level:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>tracing_subscriber::fmt;
|
||
<span class="kw">use </span>tracing::Level;
|
||
|
||
fmt()
|
||
.with_max_level(Level::DEBUG)
|
||
.init();</code></pre></div>
|
||
<p>This subscriber won’t record any spans or events!</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>tracing_subscriber::{fmt, filter::LevelFilter};
|
||
|
||
<span class="kw">let </span>subscriber = fmt()
|
||
.with_max_level(LevelFilter::OFF)
|
||
.finish();</code></pre></div>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.event_format" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#1014-1024">source</a><h4 class="code-header">pub fn <a href="#method.event_format" class="fn">event_format</a><E2>(self, fmt_event: E2) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E2, F, W><div class="where">where
|
||
E2: <a class="trait" href="trait.FormatEvent.html" title="trait tracing_subscriber::fmt::FormatEvent">FormatEvent</a><<a class="struct" href="../registry/struct.Registry.html" title="struct tracing_subscriber::registry::Registry">Registry</a>, N> + 'static,
|
||
N: for<'writer> <a class="trait" href="trait.FormatFields.html" title="trait tracing_subscriber::fmt::FormatFields">FormatFields</a><'writer> + 'static,
|
||
W: for<'writer> <a class="trait" href="trait.MakeWriter.html" title="trait tracing_subscriber::fmt::MakeWriter">MakeWriter</a><'writer> + 'static,</div></h4></section></summary><div class="docblock"><p>Sets the <a href="trait.FormatEvent.html" title="trait tracing_subscriber::fmt::FormatEvent">event formatter</a> that the subscriber being built
|
||
will use to format events that occur.</p>
|
||
<p>The event formatter may be any type implementing the <a href="trait.FormatEvent.html" title="trait tracing_subscriber::fmt::FormatEvent"><code>FormatEvent</code></a>
|
||
trait, which is implemented for all functions taking a <a href="struct.FmtContext.html" title="struct tracing_subscriber::fmt::FmtContext"><code>FmtContext</code></a>, a
|
||
<a href="format/struct.Writer.html" title="struct tracing_subscriber::fmt::format::Writer"><code>Writer</code></a>, and an <a href="../../tracing_core/event/struct.Event.html" title="struct tracing_core::event::Event"><code>Event</code></a>.</p>
|
||
<h5 id="examples-2"><a class="doc-anchor" href="#examples-2">§</a>Examples</h5>
|
||
<p>Setting a type implementing <a href="trait.FormatEvent.html" title="trait tracing_subscriber::fmt::FormatEvent"><code>FormatEvent</code></a> as the formatter:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>tracing_subscriber::fmt::format;
|
||
|
||
<span class="kw">let </span>subscriber = tracing_subscriber::fmt()
|
||
.event_format(format().compact())
|
||
.finish();</code></pre></div>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_writer" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#1040-1048">source</a><h4 class="code-header">pub fn <a href="#method.with_writer" class="fn">with_writer</a><W2>(self, make_writer: W2) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, F, W2><div class="where">where
|
||
W2: for<'writer> <a class="trait" href="trait.MakeWriter.html" title="trait tracing_subscriber::fmt::MakeWriter">MakeWriter</a><'writer> + 'static,</div></h4></section></summary><div class="docblock"><p>Sets the <a href="trait.MakeWriter.html" title="trait tracing_subscriber::fmt::MakeWriter"><code>MakeWriter</code></a> that the subscriber being built will use to write events.</p>
|
||
<h5 id="examples-3"><a class="doc-anchor" href="#examples-3">§</a>Examples</h5>
|
||
<p>Using <code>stderr</code> rather than <code>stdout</code>:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>tracing_subscriber::fmt;
|
||
<span class="kw">use </span>std::io;
|
||
|
||
fmt()
|
||
.with_writer(io::stderr)
|
||
.init();</code></pre></div>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_test_writer" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#1074-1079">source</a><h4 class="code-header">pub fn <a href="#method.with_test_writer" class="fn">with_test_writer</a>(self) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, F, <a class="struct" href="struct.TestWriter.html" title="struct tracing_subscriber::fmt::TestWriter">TestWriter</a>></h4></section></summary><div class="docblock"><p>Configures the subscriber to support <a href="https://doc.rust-lang.org/book/ch11-02-running-tests.html#showing-function-output"><code>libtest</code>’s output capturing</a> when used in
|
||
unit tests.</p>
|
||
<p>See <a href="struct.TestWriter.html" title="struct tracing_subscriber::fmt::TestWriter"><code>TestWriter</code></a> for additional details.</p>
|
||
<h5 id="examples-4"><a class="doc-anchor" href="#examples-4">§</a>Examples</h5>
|
||
<p>Using <a href="struct.TestWriter.html" title="struct tracing_subscriber::fmt::TestWriter"><code>TestWriter</code></a> to let <code>cargo test</code> capture test output. Note that we do not install it
|
||
globally as it may cause conflicts.</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>tracing_subscriber::fmt;
|
||
<span class="kw">use </span>tracing::subscriber;
|
||
|
||
subscriber::set_default(
|
||
fmt()
|
||
.with_test_writer()
|
||
.finish()
|
||
);</code></pre></div>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.map_event_format" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#1094-1104">source</a><h4 class="code-header">pub fn <a href="#method.map_event_format" class="fn">map_event_format</a><E2>(
|
||
self,
|
||
f: impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(E) -> E2,
|
||
) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E2, F, W><div class="where">where
|
||
E2: <a class="trait" href="trait.FormatEvent.html" title="trait tracing_subscriber::fmt::FormatEvent">FormatEvent</a><<a class="struct" href="../registry/struct.Registry.html" title="struct tracing_subscriber::registry::Registry">Registry</a>, N> + 'static,
|
||
N: for<'writer> <a class="trait" href="trait.FormatFields.html" title="trait tracing_subscriber::fmt::FormatFields">FormatFields</a><'writer> + 'static,
|
||
W: for<'writer> <a class="trait" href="trait.MakeWriter.html" title="trait tracing_subscriber::fmt::MakeWriter">MakeWriter</a><'writer> + 'static,</div></h4></section></summary><div class="docblock"><p>Updates the event formatter by applying a function to the existing event formatter.</p>
|
||
<p>This sets the event formatter that the subscriber being built will use to record fields.</p>
|
||
<h5 id="examples-5"><a class="doc-anchor" href="#examples-5">§</a>Examples</h5>
|
||
<p>Updating an event formatter:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>subscriber = tracing_subscriber::fmt()
|
||
.map_event_format(|e| e.compact())
|
||
.finish();</code></pre></div>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.map_fmt_fields" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#1120-1128">source</a><h4 class="code-header">pub fn <a href="#method.map_fmt_fields" class="fn">map_fmt_fields</a><N2>(
|
||
self,
|
||
f: impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(N) -> N2,
|
||
) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N2, E, F, W><div class="where">where
|
||
N2: for<'writer> <a class="trait" href="trait.FormatFields.html" title="trait tracing_subscriber::fmt::FormatFields">FormatFields</a><'writer> + 'static,</div></h4></section></summary><div class="docblock"><p>Updates the field formatter by applying a function to the existing field formatter.</p>
|
||
<p>This sets the field formatter that the subscriber being built will use to record fields.</p>
|
||
<h5 id="examples-6"><a class="doc-anchor" href="#examples-6">§</a>Examples</h5>
|
||
<p>Updating a field formatter:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>tracing_subscriber::field::MakeExt;
|
||
<span class="kw">let </span>subscriber = tracing_subscriber::fmt()
|
||
.map_fmt_fields(|f| f.debug_alt())
|
||
.finish();</code></pre></div>
|
||
</div></details><details class="toggle method-toggle" open><summary><section id="method.map_writer" class="method"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#1147-1155">source</a><h4 class="code-header">pub fn <a href="#method.map_writer" class="fn">map_writer</a><W2>(
|
||
self,
|
||
f: impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(W) -> W2,
|
||
) -> <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, F, W2><div class="where">where
|
||
W2: for<'writer> <a class="trait" href="trait.MakeWriter.html" title="trait tracing_subscriber::fmt::MakeWriter">MakeWriter</a><'writer> + 'static,</div></h4></section></summary><div class="docblock"><p>Updates the <a href="trait.MakeWriter.html" title="trait tracing_subscriber::fmt::MakeWriter"><code>MakeWriter</code></a> by applying a function to the existing <a href="trait.MakeWriter.html" title="trait tracing_subscriber::fmt::MakeWriter"><code>MakeWriter</code></a>.</p>
|
||
<p>This sets the <a href="trait.MakeWriter.html" title="trait tracing_subscriber::fmt::MakeWriter"><code>MakeWriter</code></a> that the subscriber being built will use to write events.</p>
|
||
<h5 id="examples-7"><a class="doc-anchor" href="#examples-7">§</a>Examples</h5>
|
||
<p>Redirect output to stderr if level is <= WARN:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>tracing::Level;
|
||
<span class="kw">use </span>tracing_subscriber::fmt::{<span class="self">self</span>, writer::MakeWriterExt};
|
||
|
||
<span class="kw">let </span>stderr = std::io::stderr.with_max_level(Level::WARN);
|
||
<span class="kw">let </span>layer = tracing_subscriber::fmt()
|
||
.map_writer(<span class="kw">move </span>|w| stderr.or_else(w))
|
||
.finish();</code></pre></div>
|
||
</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-SubscriberBuilder%3CN,+E,+F,+W%3E" class="impl"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#245">source</a><a href="#impl-Debug-for-SubscriberBuilder%3CN,+E,+F,+W%3E" class="anchor">§</a><h3 class="code-header">impl<N: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a>, E: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a>, F: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a>, W: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</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="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, F, W></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_subscriber/fmt/mod.rs.html#245">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="type" href="https://doc.rust-lang.org/1.80.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.80.0/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Default-for-SubscriberBuilder" class="impl"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#464-472">source</a><a href="#impl-Default-for-SubscriberBuilder" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/default/trait.Default.html" title="trait core::default::Default">Default</a> for <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.default" class="method trait-impl"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#465-471">source</a><a href="#method.default" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/default/trait.Default.html#tymethod.default" class="fn">default</a>() -> Self</h4></section></summary><div class='docblock'>Returns the “default value” for a type. <a href="https://doc.rust-lang.org/1.80.0/core/default/trait.Default.html#tymethod.default">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3CSubscriberBuilder%3CN,+E,+F,+W%3E%3E-for-Dispatch" class="impl"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#521-532">source</a><a href="#impl-From%3CSubscriberBuilder%3CN,+E,+F,+W%3E%3E-for-Dispatch" class="anchor">§</a><h3 class="code-header">impl<N, E, F, W> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><<a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, F, W>> for <a class="struct" href="../../tracing_core/dispatcher/struct.Dispatch.html" title="struct tracing_core::dispatcher::Dispatch">Dispatch</a><div class="where">where
|
||
N: for<'writer> <a class="trait" href="trait.FormatFields.html" title="trait tracing_subscriber::fmt::FormatFields">FormatFields</a><'writer> + 'static,
|
||
E: <a class="trait" href="trait.FormatEvent.html" title="trait tracing_subscriber::fmt::FormatEvent">FormatEvent</a><<a class="struct" href="../registry/struct.Registry.html" title="struct tracing_subscriber::registry::Registry">Registry</a>, N> + 'static,
|
||
W: for<'writer> <a class="trait" href="trait.MakeWriter.html" title="trait tracing_subscriber::fmt::MakeWriter">MakeWriter</a><'writer> + 'static,
|
||
F: <a class="trait" href="../layer/trait.Layer.html" title="trait tracing_subscriber::layer::Layer">Layer</a><<a class="type" href="type.Formatter.html" title="type tracing_subscriber::fmt::Formatter">Formatter</a><N, E, W>> + <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</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> + 'static,
|
||
<a class="struct" href="struct.Layer.html" title="struct tracing_subscriber::fmt::Layer">Layer</a><<a class="struct" href="../registry/struct.Registry.html" title="struct tracing_subscriber::registry::Registry">Registry</a>, N, E, W>: <a class="trait" href="../layer/trait.Layer.html" title="trait tracing_subscriber::layer::Layer">Layer</a><<a class="struct" href="../registry/struct.Registry.html" title="struct tracing_subscriber::registry::Registry">Registry</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> + <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from" class="method trait-impl"><a class="src rightside" href="../../src/tracing_subscriber/fmt/mod.rs.html#529-531">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>(builder: <a class="struct" href="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, F, W>) -> <a class="struct" href="../../tracing_core/dispatcher/struct.Dispatch.html" title="struct tracing_core::dispatcher::Dispatch">Dispatch</a></h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details></div><h2 id="synthetic-implementations" class="section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor">§</a></h2><div id="synthetic-implementations-list"><section id="impl-Freeze-for-SubscriberBuilder%3CN,+E,+F,+W%3E" class="impl"><a href="#impl-Freeze-for-SubscriberBuilder%3CN,+E,+F,+W%3E" class="anchor">§</a><h3 class="code-header">impl<N, E, F, W> <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="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, F, W><div class="where">where
|
||
F: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Freeze.html" title="trait core::marker::Freeze">Freeze</a>,
|
||
W: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Freeze.html" title="trait core::marker::Freeze">Freeze</a>,
|
||
N: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Freeze.html" title="trait core::marker::Freeze">Freeze</a>,
|
||
E: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Freeze.html" title="trait core::marker::Freeze">Freeze</a>,</div></h3></section><section id="impl-RefUnwindSafe-for-SubscriberBuilder%3CN,+E,+F,+W%3E" class="impl"><a href="#impl-RefUnwindSafe-for-SubscriberBuilder%3CN,+E,+F,+W%3E" class="anchor">§</a><h3 class="code-header">impl<N, E, F, W> <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="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, F, W><div class="where">where
|
||
F: <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>,
|
||
W: <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>,
|
||
N: <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>,
|
||
E: <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>,</div></h3></section><section id="impl-Send-for-SubscriberBuilder%3CN,+E,+F,+W%3E" class="impl"><a href="#impl-Send-for-SubscriberBuilder%3CN,+E,+F,+W%3E" class="anchor">§</a><h3 class="code-header">impl<N, E, F, W> <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="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, F, W><div class="where">where
|
||
F: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>,
|
||
W: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>,
|
||
N: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>,
|
||
E: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>,</div></h3></section><section id="impl-Sync-for-SubscriberBuilder%3CN,+E,+F,+W%3E" class="impl"><a href="#impl-Sync-for-SubscriberBuilder%3CN,+E,+F,+W%3E" class="anchor">§</a><h3 class="code-header">impl<N, E, F, W> <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="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, F, W><div class="where">where
|
||
F: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>,
|
||
W: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>,
|
||
N: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>,
|
||
E: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>,</div></h3></section><section id="impl-Unpin-for-SubscriberBuilder%3CN,+E,+F,+W%3E" class="impl"><a href="#impl-Unpin-for-SubscriberBuilder%3CN,+E,+F,+W%3E" class="anchor">§</a><h3 class="code-header">impl<N, E, F, W> <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="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, F, W><div class="where">where
|
||
F: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>,
|
||
W: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>,
|
||
N: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>,
|
||
E: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>,</div></h3></section><section id="impl-UnwindSafe-for-SubscriberBuilder%3CN,+E,+F,+W%3E" class="impl"><a href="#impl-UnwindSafe-for-SubscriberBuilder%3CN,+E,+F,+W%3E" class="anchor">§</a><h3 class="code-header">impl<N, E, F, W> <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="struct.SubscriberBuilder.html" title="struct tracing_subscriber::fmt::SubscriberBuilder">SubscriberBuilder</a><N, E, F, W><div class="where">where
|
||
F: <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>,
|
||
W: <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>,
|
||
N: <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>,
|
||
E: <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>,</div></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
|
||
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-1" 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-1" 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="../../tracing/instrument/trait.Instrument.html" title="trait tracing::instrument::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">source</a><a href="#method.instrument" class="anchor">§</a><h4 class="code-header">fn <a href="../../tracing/instrument/trait.Instrument.html#method.instrument" class="fn">instrument</a>(self, span: <a class="struct" href="../../tracing/span/struct.Span.html" title="struct tracing::span::Span">Span</a>) -> <a class="struct" href="../../tracing/instrument/struct.Instrumented.html" title="struct tracing::instrument::Instrumented">Instrumented</a><Self></h4></section></summary><div class='docblock'>Instruments this type with the provided <a href="../../tracing/span/struct.Span.html" title="struct tracing::span::Span"><code>Span</code></a>, returning an
|
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<code>Instrumented</code> wrapper. <a href="../../tracing/instrument/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">source</a><a href="#method.in_current_span" class="anchor">§</a><h4 class="code-header">fn <a href="../../tracing/instrument/trait.Instrument.html#method.in_current_span" class="fn">in_current_span</a>(self) -> <a class="struct" href="../../tracing/instrument/struct.Instrumented.html" title="struct tracing::instrument::Instrumented">Instrumented</a><Self></h4></section></summary><div class='docblock'>Instruments this type with the <a href="../../tracing/span/struct.Span.html#method.current" title="associated function tracing::span::Span::current">current</a> <a href="../../tracing/span/struct.Span.html" title="struct tracing::span::Span"><code>Span</code></a>, returning an
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<code>Instrumented</code> wrapper. <a href="../../tracing/instrument/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-SubscriberInitExt-for-T" class="impl"><a class="src rightside" href="../../src/tracing_subscriber/util.rs.html#95">source</a><a href="#impl-SubscriberInitExt-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="../util/trait.SubscriberInitExt.html" title="trait tracing_subscriber::util::SubscriberInitExt">SubscriberInitExt</a> for T<div class="where">where
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T: <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="../../tracing_core/dispatcher/struct.Dispatch.html" title="struct tracing_core::dispatcher::Dispatch">Dispatch</a>>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.set_default" class="method trait-impl"><a class="src rightside" href="../../src/tracing_subscriber/util.rs.html#38-43">source</a><a href="#method.set_default" class="anchor">§</a><h4 class="code-header">fn <a href="../util/trait.SubscriberInitExt.html#method.set_default" class="fn">set_default</a>(self) -> <a class="struct" href="../../tracing_core/dispatcher/struct.DefaultGuard.html" title="struct tracing_core::dispatcher::DefaultGuard">DefaultGuard</a></h4></section></summary><div class='docblock'>Sets <code>self</code> as the <a href="https://docs.rs/tracing/0.1.21/tracing/dispatcher/index.html#setting-the-default-subscriber">default subscriber</a> in the current scope, returning a
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guard that will unset it when dropped. <a href="../util/trait.SubscriberInitExt.html#method.set_default">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.try_init-1" class="method trait-impl"><a class="src rightside" href="../../src/tracing_subscriber/util.rs.html#58-74">source</a><a href="#method.try_init-1" class="anchor">§</a><h4 class="code-header">fn <a href="../util/trait.SubscriberInitExt.html#method.try_init" class="fn">try_init</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><<a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.unit.html">()</a>, <a class="struct" href="../util/struct.TryInitError.html" title="struct tracing_subscriber::util::TryInitError">TryInitError</a>></h4></section></summary><div class='docblock'>Attempts to set <code>self</code> as the <a href="https://docs.rs/tracing/0.1.21/tracing/dispatcher/index.html#setting-the-default-subscriber">global default subscriber</a> in the current
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scope, returning an error if one is already set. <a href="../util/trait.SubscriberInitExt.html#method.try_init">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.init-1" class="method trait-impl"><a class="src rightside" href="../../src/tracing_subscriber/util.rs.html#89-92">source</a><a href="#method.init-1" class="anchor">§</a><h4 class="code-header">fn <a href="../util/trait.SubscriberInitExt.html#method.init" class="fn">init</a>(self)</h4></section></summary><div class='docblock'>Attempts to set <code>self</code> as the <a href="https://docs.rs/tracing/0.1.21/tracing/dispatcher/index.html#setting-the-default-subscriber">global default subscriber</a> in the current
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scope, panicking if this fails. <a href="../util/trait.SubscriberInitExt.html#method.init">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/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="../../tracing/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#176-178">source</a><a href="#method.with_subscriber" class="anchor">§</a><h4 class="code-header">fn <a href="../../tracing/instrument/trait.WithSubscriber.html#method.with_subscriber" class="fn">with_subscriber</a><S>(self, subscriber: S) -> <a class="struct" href="../../tracing/instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self><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="../../tracing_core/dispatcher/struct.Dispatch.html" title="struct tracing_core::dispatcher::Dispatch">Dispatch</a>>,</div></h4></section></summary><div class='docblock'>Attaches the provided <a href="../../tracing_core/subscriber/trait.Subscriber.html" title="trait tracing_core::subscriber::Subscriber"><code>Subscriber</code></a> to this type, returning a
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<a href="../../tracing/instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch"><code>WithDispatch</code></a> wrapper. <a href="../../tracing/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">source</a><a href="#method.with_current_subscriber" class="anchor">§</a><h4 class="code-header">fn <a href="../../tracing/instrument/trait.WithSubscriber.html#method.with_current_subscriber" class="fn">with_current_subscriber</a>(self) -> <a class="struct" href="../../tracing/instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self></h4></section></summary><div class='docblock'>Attaches the current <a href="../../tracing/dispatcher/index.html#setting-the-default-subscriber" title="mod tracing::dispatcher">default</a> <a href="../../tracing_core/subscriber/trait.Subscriber.html" title="trait tracing_core::subscriber::Subscriber"><code>Subscriber</code></a> to this type, returning a
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<a href="../../tracing/instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch"><code>WithDispatch</code></a> wrapper. <a href="../../tracing/instrument/trait.WithSubscriber.html#method.with_current_subscriber">Read more</a></div></details></div></details></div></section></div></main></body></html> |