error: called `filter(..).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(..)` instead
  --> $DIR/methods_unfixable.rs:9:13
   |
LL |     let _ = iter.filter(|_| true).next();
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `iter.find(|_| true)`
   |
help: you will also need to make `iter` mutable, because `find` takes `&mut self`
  --> $DIR/methods_unfixable.rs:8:9
   |
LL |     let iter = (0..10);
   |         ^^^^
   = note: `-D clippy::filter-next` implied by `-D warnings`

error: aborting due to previous error