diff --git a/tests/rustdoc-ui/ice-bug-report-url.rs b/tests/rustdoc-ui/ice-bug-report-url.rs
index cc066447d313b..8ede91cf8f4f4 100644
--- a/tests/rustdoc-ui/ice-bug-report-url.rs
+++ b/tests/rustdoc-ui/ice-bug-report-url.rs
@@ -6,8 +6,8 @@
 // normalize-stderr-test "note: compiler flags.*\n\n" -> ""
 // normalize-stderr-test "note: rustc.*running on.*" -> "note: rustc {version} running on {platform}"
 // normalize-stderr-test "thread.*panicked at .*, compiler.*" -> "thread panicked at 'aborting due to `-Z treat-err-as-bug`'"
-// normalize-stderr-test "\s*\d{1,}: .*\n" -> ""
-// normalize-stderr-test "\s at .*\n" -> ""
+// normalize-stderr-test " +\d{1,}: .*\n" -> ""
+// normalize-stderr-test " + at .*\n" -> ""
 // normalize-stderr-test ".*note: Some details are omitted.*\n" -> ""
 
 fn wrong()
diff --git a/tests/rustdoc-ui/ice-bug-report-url.stderr b/tests/rustdoc-ui/ice-bug-report-url.stderr
index cfb73a9b9193f..98c08b9a8944b 100644
--- a/tests/rustdoc-ui/ice-bug-report-url.stderr
+++ b/tests/rustdoc-ui/ice-bug-report-url.stderr
@@ -6,6 +6,7 @@ LL | fn wrong()
 
 thread panicked at 'aborting due to `-Z treat-err-as-bug`'
 stack backtrace:
+
 error: the compiler unexpectedly panicked. this is a bug.
 
 note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-rustdoc&template=ice.md