cleanup doc tests

guide/src/qs_2.md

@@ -69,7 +69,8 @@ Head over to ``http://localhost:8088/`` to see the results.
 
 Here is full source of main.rs file:
 
-```rust,ignore
+```rust
+# use std::thread;
 # extern crate actix_web;
 use actix_web::*;
 
@@ -78,11 +79,13 @@ fn index(req: HttpRequest) -> &'static str {
 }
 
 fn main() {
+# thread::spawn(|| {
     HttpServer::new(
         || Application::new()
             .resource("/", |r| r.f(index)))
         .bind("127.0.0.1:8088").expect("Can not bind to 127.0.0.1:8088")
         .run();
+# });
 }
 ```