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error: `into_iter` call on an empty collection
--> $DIR/iter_on_empty_collections.rs:5:16
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LL | assert_eq!([].into_iter().next(), Option::<i32>::None);
| ^^^^^^^^^^^^^^ help: try: `std::iter::empty()`
|
= note: `-D clippy::iter-on-empty-collections` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::iter_on_empty_collections)]`
error: `iter_mut` call on an empty collection
--> $DIR/iter_on_empty_collections.rs:6:16
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LL | assert_eq!([].iter_mut().next(), Option::<&mut i32>::None);
| ^^^^^^^^^^^^^ help: try: `std::iter::empty()`
error: `iter` call on an empty collection
--> $DIR/iter_on_empty_collections.rs:7:16
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LL | assert_eq!([].iter().next(), Option::<&i32>::None);
| ^^^^^^^^^ help: try: `std::iter::empty()`
error: `into_iter` call on an empty collection
--> $DIR/iter_on_empty_collections.rs:8:16
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LL | assert_eq!(None.into_iter().next(), Option::<i32>::None);
| ^^^^^^^^^^^^^^^^ help: try: `std::iter::empty()`
error: `iter_mut` call on an empty collection
--> $DIR/iter_on_empty_collections.rs:9:16
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LL | assert_eq!(None.iter_mut().next(), Option::<&mut i32>::None);
| ^^^^^^^^^^^^^^^ help: try: `std::iter::empty()`
error: `iter` call on an empty collection
--> $DIR/iter_on_empty_collections.rs:10:16
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LL | assert_eq!(None.iter().next(), Option::<&i32>::None);
| ^^^^^^^^^^^ help: try: `std::iter::empty()`
error: aborting due to 6 previous errors
|