warning: unreachable statement
  --> $DIR/never-assign-dead-code.rs:10:5
   |
LL |     drop(x); //~ WARN unreachable
   |     ^^^^^^^^
   |
note: lint level defined here
  --> $DIR/never-assign-dead-code.rs:5:9
   |
LL | #![warn(unused)]
   |         ^^^^^^
   = note: #[warn(unreachable_code)] implied by #[warn(unused)]

warning: unreachable expression
  --> $DIR/never-assign-dead-code.rs:10:5
   |
LL |     drop(x); //~ WARN unreachable
   |     ^^^^^^^

warning: unused variable: `x`
  --> $DIR/never-assign-dead-code.rs:9:9
   |
LL |     let x: ! = panic!("aah"); //~ WARN unused
   |         ^ help: consider using `_x` instead
   |
note: lint level defined here
  --> $DIR/never-assign-dead-code.rs:5:9
   |
LL | #![warn(unused)]
   |         ^^^^^^
   = note: #[warn(unused_variables)] implied by #[warn(unused)]