error: unused variable: `x`
  --> $DIR/run-rustfix-revisions.rs:7:9
   |
LL |     let x = 0usize;
   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
   |
note: the lint level is defined here
  --> $DIR/run-rustfix-revisions.rs:4:9
   |
LL | #![deny(unused_variables)]
   |         ^^^^^^^^^^^^^^^^

error: aborting due to 1 previous error