error: this range is empty so it will yield no values
  --> $DIR/reversed_empty_ranges_fixable.rs:9:5
   |
LL |     (42..=21).for_each(|x| println!("{}", x));
   |     ^^^^^^^^^
   |
   = note: `-D clippy::reversed-empty-ranges` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::reversed_empty_ranges)]`
help: consider using the following if you are attempting to iterate over this range in reverse
   |
LL |     (21..=42).rev().for_each(|x| println!("{}", x));
   |     ~~~~~~~~~~~~~~~

error: this range is empty so it will yield no values
  --> $DIR/reversed_empty_ranges_fixable.rs:10:13
   |
LL |     let _ = (ANSWER..21).filter(|x| x % 2 == 0).take(10).collect::<Vec<_>>();
   |             ^^^^^^^^^^^^
   |
help: consider using the following if you are attempting to iterate over this range in reverse
   |
LL |     let _ = (21..ANSWER).rev().filter(|x| x % 2 == 0).take(10).collect::<Vec<_>>();
   |             ~~~~~~~~~~~~~~~~~~

error: this range is empty so it will yield no values
  --> $DIR/reversed_empty_ranges_fixable.rs:12:14
   |
LL |     for _ in -21..=-42 {}
   |              ^^^^^^^^^
   |
help: consider using the following if you are attempting to iterate over this range in reverse
   |
LL |     for _ in (-42..=-21).rev() {}
   |              ~~~~~~~~~~~~~~~~~

error: this range is empty so it will yield no values
  --> $DIR/reversed_empty_ranges_fixable.rs:13:14
   |
LL |     for _ in 42u32..21u32 {}
   |              ^^^^^^^^^^^^
   |
help: consider using the following if you are attempting to iterate over this range in reverse
   |
LL |     for _ in (21u32..42u32).rev() {}
   |              ~~~~~~~~~~~~~~~~~~~~

error: aborting due to 4 previous errors