--- /dev/null
+error: `--x` could be misinterpreted as pre-decrement by C programmers, is usually a no-op
+ --> $DIR/double_neg.rs:6:5
+ |
+LL | --x;
+ | ^^^
+ |
+ = note: `-D clippy::double-neg` implied by `-D warnings`
+
+error: aborting due to previous error
+