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                        <h1 id="faq"><a class="header" href="#faq">FAQ</a></h1>
<h3 id="is-this-an-official-rust-project"><a class="header" href="#is-this-an-official-rust-project">Is this an official Rust project?</a></h3>
<p>Yes. rustup is an official Rust project. It is the recommended way to install
Rust at https://www.rust-lang.org.</p>
<h3 id="how-is-this-related-to-multirust"><a class="header" href="#how-is-this-related-to-multirust">How is this related to multirust?</a></h3>
<p>rustup is the successor to <a href="https://github.com/brson/multirust">multirust</a>. rustup began as multirust-rs, a
rewrite of multirust from shell script to Rust, by <a href="https://github.com/Diggsey">Diggory Blake</a>, and is now
maintained by The Rust Project.</p>
<h3 id="can-rustup-download-the-rust-source-code"><a class="header" href="#can-rustup-download-the-rust-source-code">Can rustup download the Rust source code?</a></h3>
<p>The source for Rust’s standard library can be obtained by running <code>rustup component add rust-src</code>. It will be downloaded to the <code>&lt;toolchain root&gt;/lib/rustlib/src/rust</code> directory of the current toolchain.</p>
<p>The source for the compiler and tools must be obtained from the <a href="https://github.com/rust-lang/rust/">Rust
repository</a> or the standalone <a href="https://forge.rust-lang.org/infra/other-installation-methods.html#source-code">source tarballs</a>.</p>
<h3 id="rustup-fails-with-windows-error-32"><a class="header" href="#rustup-fails-with-windows-error-32">rustup fails with Windows error 32</a></h3>
<p>If <code>rustup</code> fails with Windows error 32, it may be due to antivirus scanning
in the background. Disable antivirus scanner and try again.</p>
<h3 id="i-get-error-could-not-remove-rustup-bin-file-cusersusercargobinrustupexe"><a class="header" href="#i-get-error-could-not-remove-rustup-bin-file-cusersusercargobinrustupexe">I get “error: could not remove ‘rustup-bin’ file: ‘C:\Users\USER\.cargo\bin\rustup.exe’”</a></h3>
<p>If <code>rustup</code> fails to self-update in this way it’s usually because RLS is
running (your editor is open and running RLS). The solution is to stop RLS (by
closing your editor) and try again.</p>
<h3 id="rustup-exited-successfully-but-i-cant-run-rustc---version"><a class="header" href="#rustup-exited-successfully-but-i-cant-run-rustc---version">rustup exited successfully but I can’t run <code>rustc --version</code></a></h3>
<p>Restart your shell. This will reload your <code>PATH</code> environment
variable to include Cargo’s bin directory (<code>$CARGO_HOME/bin</code>).</p>

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