: Stabalize LocalRuntime

Author: Daksh14

tokio/src/runtime/local_runtime/runtime.rs

@@ -318,6 +318,7 @@ impl LocalRuntime {
     /// use std::time::Duration;
     ///
     /// fn main() {
+    /// #  if cfg!(miri) { return } // Miri reports error when main thread terminated without waiting all remaining threads.        
     ///    let runtime = LocalRuntime::new().unwrap();
     ///
     ///    runtime.block_on(async move {