error: unreachable statement
  --> $DIR/match-no-arms-unreachable-after.rs:8:5
   |
LL |     match v { }
   |     ----------- any code following this expression is unreachable
LL |     let x = 2;
   |     ^^^^^^^^^^ unreachable statement
   |
note: lint level defined here
  --> $DIR/match-no-arms-unreachable-after.rs:2:9
   |
LL | #![deny(unreachable_code)]
   |         ^^^^^^^^^^^^^^^^

error: aborting due to previous error