From ab4247a6e8420bd5aaffc67b7690054fac78e30f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=A1=A5=E4=B8=8B=E7=BA=A2=E8=8D=AF?= <ai121@foxmail.com>
Date: Sat, 17 Jan 2026 17:27:36 +0800
Subject: [PATCH] update

---
 examples/main.rs | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/examples/main.rs b/examples/main.rs
index fdd6ece..f27530a 100644
--- a/examples/main.rs
+++ b/examples/main.rs
@@ -10,12 +10,11 @@ use std::sync::atomic::{AtomicUsize, Ordering};
 #[tokio::main]
 async fn main() -> Result<()> {
 
-    if std::env::var("RUST_LOG").is_err() {
-        unsafe { std::env::set_var("RUST_LOG", "info"); }
-    }
+    let filter = EnvFilter::try_from_default_env()
+        .unwrap_or_else(|_| EnvFilter::new("info"));
 
     tracing_subscriber::fmt()
-        .with_env_filter(EnvFilter::from_default_env())
+        .with_env_filter(filter)
         .with_ansi(true)
         .init();