error: length comparison to zero
  --> $DIR/len_zero_ranges.rs:10:17
   |
LL |         let _ = (0..42).len() == 0;
   |                 ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `(0..42).is_empty()`
   |
   = note: `-D clippy::len-zero` implied by `-D warnings`

error: aborting due to previous error