"the method rev() exists on usize" is misleading

[rcoh]

Given the following code:

  let arr = &[0,1,2,3];
  for i in 0..arr.len().rev() {
     // ...   
  }

The current output is:

error[E0599]: the method `rev` exists for type `usize`, but its trait bounds were not satisfied
 --> src/main.rs:5:25
  |
5 |   for i in 0..arr.len().rev() {
  |                         ^^^ method cannot be called on `usize` due to unsatisfied trait bounds
  |
  = note: the following trait bounds were not satisfied:
          `usize: Iterator`
          which is required by `&mut usize: Iterator

Ideally the output should look like:

// Minimal fix: remove misleading message:
Omit "the method rev exists for type usize." 

// Amazing fix:
  |
5 |   for i in 0..arr.len().rev() {
  |                         ^^^ method cannot be called on `usize` due to unsatisfied trait bounds
  |
  = note: the following trait bounds were not satisfied:
          `usize: Iterator`
          which is required by `&mut usize: Iterator
  = hint: (0..arr.len()) implements `Iterator`, perhaps you are missing parentheses?