error: statement with no effect
  --> $DIR/blocks.rs:8:9
   |
LL |         ;;;;
   |         ^^^^
   |
   = note: `-D clippy::no-effect` implied by `-D warnings`

error: statement with no effect
  --> $DIR/blocks.rs:15:5
   |
LL |     -x;
   |     ^^^

error: aborting due to 2 previous errors