Auto merge of rust-lang#88165 - GuillaumeGomez:rollup-4o0v2ps, r=GuillaumeGomez

Rollup of 8 pull requests

Successful merges:

 - rust-lang#86123 (Preserve more spans in internal `rustc_queries!` macro)
 - rust-lang#87874 (Add TcpStream type to TcpListener::incoming docs)
 - rust-lang#88034 (rustc_privacy: Replace `HirId`s and `DefId`s with `LocalDefId`s where possible)
 - rust-lang#88050 (Remove `HashStable` impls for `FileName` and `RealFileName`)
 - rust-lang#88093 ([rustdoc] Wrap code blocks in `<code>` tag)
 - rust-lang#88146 (Add tests for some `feature(const_evaluatable_checked)` incr comp issues)
 - rust-lang#88153 (Update .mailmap)
 - rust-lang#88159 (Use a trait instead of the now disallowed missing trait there)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

std/src/net/tcp.rs

@@ -767,17 +767,24 @@ impl TcpListener {
     /// # Examples
     ///
     /// ```no_run
-    /// use std::net::TcpListener;
+    /// use std::net::{TcpListener, TcpStream};
     ///
-    /// let listener = TcpListener::bind("127.0.0.1:80").unwrap();
+    /// fn handle_connection(stream: TcpStream) {
+    ///    //...
+    /// }
     ///
-    /// for stream in listener.incoming() {
-    ///     match stream {
-    ///         Ok(stream) => {
-    ///             println!("new client!");
+    /// fn main() -> std::io::Result<()> {
+    ///     let listener = TcpListener::bind("127.0.0.1:80").unwrap();
+    ///
+    ///     for stream in listener.incoming() {
+    ///         match stream {
+    ///             Ok(stream) => {
+    ///                 handle_connection(stream);
+    ///             }
+    ///             Err(e) => { /* connection failed */ }
     ///         }
-    ///         Err(e) => { /* connection failed */ }
     ///     }
+    ///     Ok(())
     /// }
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]