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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="On native: uses env_log"><meta name="keywords" content="rust, rustlang, rust-lang, setup"><title>setup in abstutil - Rust</title><link rel="stylesheet" type="text/css" href="../normalize.css"><link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../ayu.css" disabled ><script id="default-settings"></script><script src="../storage.js"></script><script src="../crates.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../favicon.svg">
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<a id="settings-menu" href="../settings.html"><img src="../wheel.svg" width="18" height="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class="fqn"><span class="in-band">Function <a href="index.html">abstutil</a>::<wbr><a class="fn" href="">setup</a><button id="copy-path" onclick="copy_path(this)"></button></span><span class="out-of-band"><span id="render-detail"><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span><a class="srclink" href="../src/abstutil/logger.rs.html#38-49" title="goto source code">[src]</a></span></h1><pre class="rust fn">pub fn setup()</pre><div class="docblock"><h2 id="on-native-uses-env_log" class="section-header"><a href="#on-native-uses-env_log">On native: uses env_log</a></h2>
<p>You can adjust the log level without recompiling with the RUST_LOG env variable.</p>
<pre><code class="language-skip">RUST_LOG=debug cargo run --bin game
</code></pre>
<p>This can be done on a per lib basis:</p>
<pre><code class="language-skip">RUST_LOG=my_lib=debug cargo run --bin game
</code></pre>
<p>Or a module-by-module basis:</p>
<pre><code class="language-skip">RUST_LOG=my_lib::module=debug cargo run --bin game
</code></pre>
<p>You can mix and match:</p>
<pre><code class="language-skip"># error logging by default, except the foo:bar module at debug level
# and the entire baz crate at info level
RUST_LOG=error,foo::bar=debug,baz=info cargo run --bin game
</code></pre>
<p>For some special cases, you might want to use regex matching by specifying a pattern with the
“/”:</p>
<pre><code class="language-skip"># only log once every 10k
RUST_LOG=&quot;fast_paths=debug/contracted node [0-9]+0000 &quot; mike import_la
</code></pre>
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