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<p class='location'>Struct Stderr</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Write">Write</a><a href="#impl-Debug">Debug</a><a href="#impl-AsyncWrite">AsyncWrite</a></div><a class="sidebar-title" href="#synthetic-implementations">Auto Trait Implementations</a><div class="sidebar-links"><a href="#impl-Send">Send</a><a href="#impl-Sync">Sync</a></div></div><p class='location'><a href='../index.html'>tokio</a>::<wbr><a href='index.html'>io</a></p><script>window.sidebarCurrent = {name: 'Stderr', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<section id='main' class="content"><h1 class='fqn'><span class='in-band'>Struct <a href='../index.html'>tokio</a>::<wbr><a href='index.html'>io</a>::<wbr><a class="struct" href=''>Stderr</a></span><span class='out-of-band'><span id='render-detail'>
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</span><a class='srclink' href='../../src/tokio_fs/stderr.rs.html#17-19' title='goto source code'>[src]</a></span></h1><div class="docblock type-decl"><pre class='rust struct'>pub struct Stderr { /* fields omitted */ }</pre></div><div class='docblock'><p>A handle to the standard error stream of a process.</p>
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<p>The handle implements the <a href="trait.AsyncWrite.html"><code>AsyncWrite</code></a> trait, but beware that concurrent
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writes to <code>Stderr</code> must be executed with care.</p>
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<p>Created by the <a href="fn.stderr.html"><code>stderr</code></a> function.</p>
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Trait Implementations<a href='#implementations' class='anchor'></a>
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<h3 id='impl-Write' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="trait" href="../../tokio/prelude/trait.Write.html" title="trait tokio::prelude::Write">Write</a> for <a class="struct" href="../../tokio/io/struct.Stderr.html" title="struct tokio::io::Stderr">Stderr</a></code><a href='#impl-Write' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/tokio_fs/stderr.rs.html#30-38' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.write' class="method"><span id='write.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='../../tokio/prelude/trait.Write.html#tymethod.write' class='fnname'>write</a>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="../../tokio/io/struct.Error.html" title="struct tokio::io::Error">Error</a>></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/tokio_fs/stderr.rs.html#31-33' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Write a buffer into this object, returning how many bytes were written. <a href="../../tokio/prelude/trait.Write.html#tymethod.write">Read more</a></p>
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</div><h4 id='method.flush' class="method"><span id='flush.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='../../tokio/prelude/trait.Write.html#tymethod.flush' class='fnname'>flush</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="../../tokio/io/struct.Error.html" title="struct tokio::io::Error">Error</a>></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/tokio_fs/stderr.rs.html#35-37' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Flush this output stream, ensuring that all intermediately buffered contents reach their destination. <a href="../../tokio/prelude/trait.Write.html#tymethod.flush">Read more</a></p>
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</div><h4 id='method.write_all' class="method"><span id='write_all.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='../../tokio/prelude/trait.Write.html#method.write_all' class='fnname'>write_all</a>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="../../tokio/io/struct.Error.html" title="struct tokio::io::Error">Error</a>></code></span></td><td><span class='out-of-band'><div class='ghost'></div><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/io/mod.rs.html#1096-1107' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Attempts to write an entire buffer into this write. <a href="../../tokio/prelude/trait.Write.html#method.write_all">Read more</a></p>
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</div><h4 id='method.write_fmt' class="method"><span id='write_fmt.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='../../tokio/prelude/trait.Write.html#method.write_fmt' class='fnname'>write_fmt</a>(&mut self, fmt: <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Arguments.html" title="struct core::fmt::Arguments">Arguments</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="../../tokio/io/struct.Error.html" title="struct tokio::io::Error">Error</a>></code></span></td><td><span class='out-of-band'><div class='ghost'></div><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/io/mod.rs.html#1148-1180' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Writes a formatted string into this writer, returning any error encountered. <a href="../../tokio/prelude/trait.Write.html#method.write_fmt">Read more</a></p>
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</div><h4 id='method.by_ref' class="method"><div class="important-traits"><div class='tooltip'>ⓘ<span class='tooltiptext'>Important traits for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>R</span></div><div class="content hidden"><h3 class="important">Important traits for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>R</h3><code class="content"><span class="where fmt-newline">impl<'a, R> <a class="trait" href="../../tokio/prelude/trait.Read.html" title="trait tokio::prelude::Read">Read</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>R <span class="where fmt-newline">where<br> R: <a class="trait" href="../../tokio/prelude/trait.Read.html" title="trait tokio::prelude::Read">Read</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></span><span class="where fmt-newline">impl<'a, W> <a class="trait" href="../../tokio/prelude/trait.Write.html" title="trait tokio::prelude::Write">Write</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>W <span class="where fmt-newline">where<br> W: <a class="trait" href="../../tokio/prelude/trait.Write.html" title="trait tokio::prelude::Write">Write</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></span><span class="where fmt-newline">impl<'a, I> <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/iterator/trait.Iterator.html" title="trait core::iter::iterator::Iterator">Iterator</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>I <span class="where fmt-newline">where<br> I: <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/iterator/trait.Iterator.html" title="trait core::iter::iterator::Iterator">Iterator</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></span><span class="where fmt-newline"> type <a href='https://doc.rust-lang.org/nightly/core/iter/iterator/trait.Iterator.html#associatedtype.Item' class="type">Item</a> = <I as <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/iterator/trait.Iterator.html" title="trait core::iter::iterator::Iterator">Iterator</a>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/iter/iterator/trait.Iterator.html#associatedtype.Item" title="type core::iter::iterator::Iterator::Item">Item</a>;</span></code></div></div><span id='by_ref.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='../../tokio/prelude/trait.Write.html#method.by_ref' class='fnname'>by_ref</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self</code></span></td><td><span class='out-of-band'><div class='ghost'></div><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/io/mod.rs.html#1204' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Creates a "by reference" adaptor for this instance of <code>Write</code>. <a href="../../tokio/prelude/trait.Write.html#method.by_ref">Read more</a></p>
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</div></div><h3 id='impl-Debug' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="../../tokio/io/struct.Stderr.html" title="struct tokio::io::Stderr">Stderr</a></code><a href='#impl-Debug' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/tokio_fs/stderr.rs.html#16' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.fmt' class="method"><span id='fmt.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&self, __arg_0: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Error.html" title="struct core::fmt::Error">Error</a>></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/tokio_fs/stderr.rs.html#16' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
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</div></div><h3 id='impl-AsyncWrite' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="trait" href="../../tokio/prelude/trait.AsyncWrite.html" title="trait tokio::prelude::AsyncWrite">AsyncWrite</a> for <a class="struct" href="../../tokio/io/struct.Stderr.html" title="struct tokio::io::Stderr">Stderr</a></code><a href='#impl-AsyncWrite' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/tokio_fs/stderr.rs.html#40-44' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.shutdown' class="method"><span id='shutdown.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='../../tokio/prelude/trait.AsyncWrite.html#tymethod.shutdown' class='fnname'>shutdown</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="../../tokio/prelude/enum.Async.html" title="enum tokio::prelude::Async">Async</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, <a class="struct" href="../../tokio/io/struct.Error.html" title="struct tokio::io::Error">Error</a>></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/tokio_fs/stderr.rs.html#41-43' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Initiates or attempts to shut down this writer, returning success when the I/O connection has completely shut down. <a href="../../tokio/prelude/trait.AsyncWrite.html#tymethod.shutdown">Read more</a></p>
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</div><h4 id='method.poll_write' class="method"><span id='poll_write.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='../../tokio/prelude/trait.AsyncWrite.html#method.poll_write' class='fnname'>poll_write</a>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="../../tokio/prelude/enum.Async.html" title="enum tokio::prelude::Async">Async</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>, <a class="struct" href="../../tokio/io/struct.Error.html" title="struct tokio::io::Error">Error</a>></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/tokio_io/async_write.rs.html#45-53' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Attempt to write bytes from <code>buf</code> into the object. <a href="../../tokio/prelude/trait.AsyncWrite.html#method.poll_write">Read more</a></p>
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</div><h4 id='method.poll_flush' class="method"><span id='poll_flush.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='../../tokio/prelude/trait.AsyncWrite.html#method.poll_flush' class='fnname'>poll_flush</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="../../tokio/prelude/enum.Async.html" title="enum tokio::prelude::Async">Async</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, <a class="struct" href="../../tokio/io/struct.Error.html" title="struct tokio::io::Error">Error</a>></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/tokio_io/async_write.rs.html#64-72' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Attempt to flush the object, ensuring that any buffered data reach their destination. <a href="../../tokio/prelude/trait.AsyncWrite.html#method.poll_flush">Read more</a></p>
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</div><h4 id='method.write_buf' class="method"><span id='write_buf.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='../../tokio/prelude/trait.AsyncWrite.html#method.write_buf' class='fnname'>write_buf</a><B>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>B) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="../../tokio/prelude/enum.Async.html" title="enum tokio::prelude::Async">Async</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>, <a class="struct" href="../../tokio/io/struct.Error.html" title="struct tokio::io::Error">Error</a>> <span class="where fmt-newline">where<br> B: <a class="trait" href="../../bytes/buf/buf/trait.Buf.html" title="trait bytes::buf::buf::Buf">Buf</a>, </span></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/tokio_io/async_write.rs.html#138-148' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Write a <code>Buf</code> into this value, returning how many bytes were written. <a href="../../tokio/prelude/trait.AsyncWrite.html#method.write_buf">Read more</a></p>
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Auto Trait Implementations<a href='#synthetic-implementations' class='anchor'></a>
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