error: length comparison to zero
  --> tests/ui/len_zero_ranges.rs:7:17
   |
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`
   = help: to override `-D warnings` add `#[allow(clippy::len_zero)]`

error: length comparison to zero
  --> tests/ui/len_zero_ranges.rs:11:17
   |
LL |         let _ = (0_u8..=42).len() == 0;
   |                 ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `(0_u8..=42).is_empty()`

error: aborting due to 2 previous errors