Add test

diff --git a/src/test/ui/nll/issue-61424.rs b/src/test/ui/nll/issue-61424.rs
new file mode 100644 (file)
index 0000000..fcb5ff6
--- /dev/null
+++ b/src/test/ui/nll/issue-61424.rs
@@ -0,0 +1,7 @@
+#![deny(unused_mut)]
+
+fn main() {
+    let mut x; //~ ERROR: variable does not need to be mutable
+    x = 0;
+    dbg!(0);
+}