Rust 方法可以被误认为是标准特性方法

我有这个警告，但我不知道如何修复这个警告.

warning: method `next` can be confused for the standard trait method `std::iter::Iterator::next`
  --> src/util/mod.rs:51:5
   |
51 | /     pub fn next(&mut self) -> Option<I::Item> {
52 | |         if self.iterator.peek().is_some() {
53 | |             self.prev = replace(&mut self.current, self.iterator.next());
54 | |             return self.current.clone();
...  |
59 | |         None
60 | |     }
   | |_____^
   |
   = help: consider implementing the trait `std::iter::Iterator` or choosing a less ambiguous method name
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#should_implement_trait
   = note: `#[warn(clippy::should_implement_trait)]` on by default

这是我现在拥有的代码--一个能够窥视前一项的迭代器.next方法也在代码片段中.

pub struct PrevPeekable<I>
where
    I: Iterator,
    <I as Iterator>::Item: Clone,
{
    /// Iterator that `PrevPeekable` wraps
    iterator: Peekable<I>,
    /// The item before the current item
    prev: Option<I::Item>,
    /// The current item
    current: Option<I::Item>,
    /// Keeps track of whether the iterator has reached the end or not
    finished: bool,
}

impl<I> PrevPeekable<I>
where
    I: Iterator,
    <I as Iterator>::Item: Clone,
{
        /// Returns the next item in the iterator
    pub fn next(&mut self) -> Option<I::Item> {
        if self.iterator.peek().is_some() {
            self.prev = replace(&mut self.current, self.iterator.next());
            return self.current.clone();
        } else if !self.finished {
            self.prev = replace(&mut self.current, self.iterator.next());
            self.finished = true;
        }
        None
    }
}

先谢谢你.