error: unused variable: `x` --> $DIR/group-forbid-always-trumps-cli.rs:4:9 | LL | let x = 1; | ^ help: if this is intentional, prefix it with an underscore: `_x` | = note: `-F unused-variables` implied by `-F unused` = help: to override `-F unused` add `#[allow(unused_variables)]` error: aborting due to 1 previous error