diff --git a/tests/rustdoc-ui/track-diagnostics.rs b/tests/rustdoc-ui/track-diagnostics.rs
index 6a5d1b53b3c7f..f7f0c9849ef03 100644
--- a/tests/rustdoc-ui/track-diagnostics.rs
+++ b/tests/rustdoc-ui/track-diagnostics.rs
@@ -3,6 +3,7 @@
 // Normalize the emitted location so this doesn't need
 // updating everytime someone adds or removes a line.
 //@ normalize-stderr: ".rs:\d+:\d+" -> ".rs:LL:CC"
+//@ normalize-stderr: "/rustc(?:-dev)?/[a-z0-9.]+/" -> ""
 
 struct A;
 struct B;