这下应该好了

src/log.rs

@@ -1,3 +1,5 @@
+use tracing::warn;
+
 pub fn init_log_with_cli() {
     // 命令行参数
     // --warn
@@ -5,7 +7,11 @@ pub fn init_log_with_cli() {
     // --trace
     // 从低级开始判断
 
-    tracing_subscriber::fmt()
+    let trace = tracing_subscriber::fmt()
         .with_max_level(tracing::Level::DEBUG)
-        .init();
+        .with_line_number(true)
+        .try_init();
+    if trace.is_err() {
+        warn!("init log with trace failed: {:?}", trace.err());
+    }
 }

tests/socket-test/Cargo.toml

@@ -15,6 +15,3 @@ toml = "0.8.8"
 
 tracing = "0.1.40"
 tracing-subscriber = { version = "0.3.18", features = ["time"] }
-
-[patch.crates-io]
-rust_socketio = { git = "https://github.com/shenjackyuanjie/rust-socketio.git", branch = "mult_payload" }