1 files changed, 1 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch20-web-server/no-listing-04-update-worker-definition/output.txt b/src/doc/book/listings/ch20-web-server/no-listing-04-update-worker-definition/output.txt
index e4c0eeb2a..fec2377dc 100644
--- a/src/doc/book/listings/ch20-web-server/no-listing-04-update-worker-definition/output.txt
+++ b/src/doc/book/listings/ch20-web-server/no-listing-04-update-worker-definition/output.txt
@@ -7,6 +7,7 @@ error[E0599]: no method named `join` found for enum `Option` in the current scop
    |                           ^^^^ method not found in `Option<JoinHandle<()>>`
    |
 note: the method `join` exists on the type `JoinHandle<()>`
+  --> /rustc/d5a82bbd26e1ad8b7401f6a718a9c57c96905483/library/std/src/thread/mod.rs:1581:5
 help: consider using `Option::expect` to unwrap the `JoinHandle<()>` value, panicking if the value is an `Option::None`
    |
 52 |             worker.thread.expect("REASON").join().unwrap();