src/test/ui/lint/let_underscore/let_underscore_lock.stderr

   1 error: non-binding let on a synchronization lock
   2   --> $DIR/let_underscore_lock.rs:6:9
   3    |
   4 LL |     let _ = data.lock().unwrap();
   5    |         ^   ^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
   6    |         |
   7    |         this lock is not assigned to a binding and is immediately dropped
   8    |
   9    = note: `#[deny(let_underscore_lock)]` on by default
  10 help: consider binding to an unused variable to avoid immediately dropping the value
  11    |
  12 LL |     let _unused = data.lock().unwrap();
  13    |         ~~~~~~~
  14 help: consider immediately dropping the value
  15    |
  16 LL |     drop(data.lock().unwrap());
  17    |     ~~~~~                    +
  18
  19 error: aborting due to previous error
  20