--- /dev/null
+error: expected rustc release number like 1.31, or nightly date like 2020-10-26
+ --> $DIR/bad-bound.rs:1:22
+ |
+1 | #[rustversion::since(stable)]
+ | ^^^^^^
+
+error: expected rustc release number like 1.31, or nightly date like 2020-10-26
+ --> $DIR/bad-bound.rs:4:26
+ |
+4 | #[rustversion::any(since(stable))]
+ | ^^^^^^