[1, 2, 3, 4, 5, 6, 7, 8, 9] .rev() .rev()/main.rs:6:106 | .rev()
| ^^^ the trait `std::iter::DoubleEndedIterator` is notnamed `collect` found for type `std::iter::
`std::rc::Rc<[closure@src/main.rs:6:21: 6:26]>: std::ops::FnMut<({integer},)>` is not satisfied
error[E0599]: no method named `collect` found for type `std::iter::Map<std::vec::IntoIter::Map<std::vec::IntoIter<{inte