diff --git a/src/test/incremental/async-lifetimes.rs b/src/test/incremental/async-lifetimes.rs
index b97725d3b6a..90a0b93b99a 100644
--- a/src/test/incremental/async-lifetimes.rs
+++ b/src/test/incremental/async-lifetimes.rs
@@ -1,6 +1,8 @@
 // revisions: rpass1 rpass2
 // edition:2021
 
+// See https://github.com/rust-lang/rust/issues/98890
+
 #![allow(unused)]
 
 struct Foo;