Run rustfix

tests/ui/patterns.fixed

@@ -0,0 +1,21 @@
+// run-rustfix
+#![allow(unused)]
+#![warn(clippy::all)]
+#![feature(slice_patterns)]
+
+fn main() {
+    let v = Some(true);
+    let s = [0, 1, 2, 3, 4];
+    match v {
+        Some(x) => (),
+        y => (),
+    }
+    match v {
+        Some(x) => (),
+        y @ None => (), // no error
+    }
+    match s {
+        [x, inside @ .., y] => (), // no error
+        [..] => (),
+    }
+}

tests/ui/patterns.rs

@@ -1,3 +1,4 @@
+// run-rustfix
 #![allow(unused)]
 #![warn(clippy::all)]
 #![feature(slice_patterns)]

tests/ui/patterns.stderr

@@ -1,5 +1,5 @@
 error: the `y @ _` pattern can be written as just `y`
-  --> $DIR/patterns.rs:10:9
+  --> $DIR/patterns.rs:11:9
    |
 LL |         y @ _ => (),
    |         ^^^^^ help: try: `y`