1 error[E0271]: expected `TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:7:21: 7:25]>` to be an iterator that yields `&_`, but it yields `u8`
2 --> $DIR/issue-31173.rs:11:10
5 | ^^^^^^ expected reference, found `u8`
7 = note: expected reference `&_`
9 note: required by a bound in `cloned`
10 --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL
12 LL | Self: Sized + Iterator<Item = &'a T>,
13 | ^^^^^^^^^^^^ required by this bound in `Iterator::cloned`
15 error[E0599]: the method `collect` exists for struct `Cloned<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:7:21: 7:25]>>`, but its trait bounds were not satisfied
16 --> $DIR/issue-31173.rs:12:10
19 | ^^^^^^^ method cannot be called on `Cloned<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:7:21: 7:25]>>` due to unsatisfied trait bounds
21 ::: $SRC_DIR/core/src/iter/adapters/take_while.rs:LL:COL
23 LL | pub struct TakeWhile<I, P> {
24 | -------------------------- doesn't satisfy `<_ as Iterator>::Item = &_`
26 ::: $SRC_DIR/core/src/iter/adapters/cloned.rs:LL:COL
28 LL | pub struct Cloned<I> {
29 | -------------------- doesn't satisfy `_: Iterator`
31 = note: the following trait bounds were not satisfied:
32 `<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:7:21: 7:25]> as Iterator>::Item = &_`
33 which is required by `Cloned<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:7:21: 7:25]>>: Iterator`
34 `Cloned<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:7:21: 7:25]>>: Iterator`
35 which is required by `&mut Cloned<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:7:21: 7:25]>>: Iterator`
37 error: aborting due to 2 previous errors
39 Some errors have detailed explanations: E0271, E0599.
40 For more information about an error, try `rustc --explain E0271`.