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``` error[E0599]: no method named `map` found for struct `Vec<bool>` in the current scope --> $DIR/vec-on-unimplemented.rs:3:23 | LL | vec![true, false].map(|v| !v).collect::<Vec<_>>(); | ^^^ `Vec<bool>` is not an iterator | help: call `.into_iter()` first | LL | vec![true, false].into_iter().map(|v| !v).collect::<Vec<_>>(); | ++++++++++++ ``` We used to provide some help through `rustc_on_unimplemented` on non-`impl Trait` and non-type-params, but this lets us get rid of some otherwise unnecessary conditions in the annotation on `Iterator`.
15 lines
549 B
Plaintext
15 lines
549 B
Plaintext
error[E0599]: no method named `map` found for struct `Vec<bool>` in the current scope
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--> $DIR/vec-on-unimplemented.rs:3:31
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LL | let _ = vec![true, false].map(|v| !v).collect::<Vec<_>>();
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| ^^^ `Vec<bool>` is not an iterator
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help: call `.into_iter()` first
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LL | let _ = vec![true, false].into_iter().map(|v| !v).collect::<Vec<_>>();
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| ++++++++++++
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0599`.
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