ICE when applying test to crate root

Author: jdonszelmann

tests/crashes/114920.rs

@@ -0,0 +1,8 @@
+// ICE when applying `#![test]` to the crate root,
+// though only when specified with a full path. `#![test]` is not enough.
+// Fixes #114920
+#![core::prelude::v1::test]
+
+
+
+fn main() {} // not important to reproduce the issue