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Make suggestions to remove params and super traits tool-only, and make the suggestion span more accurate. ``` error[E0567]: auto traits cannot have generic parameters --> $DIR/auto-trait-validation.rs:6:19 | LL | auto trait Generic<T> {} | -------^^^ | | | auto trait cannot have generic parameters error[E0568]: auto traits cannot have super traits or lifetime bounds --> $DIR/auto-trait-validation.rs:8:20 | LL | auto trait Bound : Copy {} | ----- ^^^^ | | | auto traits cannot have super traits or lifetime bounds ``` ``` error[E0380]: auto traits cannot have associated items --> $DIR/issue-23080.rs:5:8 | LL | unsafe auto trait Trait { | ----- auto traits cannot have associated items LL | fn method(&self) { | ^^^^^^ ```
41 lines
1.4 KiB
Plaintext
41 lines
1.4 KiB
Plaintext
error[E0380]: auto traits cannot have associated items
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--> $DIR/assoc-ty.rs:10:10
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LL | auto trait Trait {
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| ----- auto traits cannot have associated items
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LL |
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LL | type Output;
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| ^^^^^^
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error[E0658]: auto traits are experimental and possibly buggy
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--> $DIR/assoc-ty.rs:8:1
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LL | / auto trait Trait {
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LL | |
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LL | | type Output;
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LL | |
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LL | | }
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| |_^
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= note: see issue #13231 <https://github.com/rust-lang/rust/issues/13231> for more information
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= help: add `#![feature(auto_traits)]` to the crate attributes to enable
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= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
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error[E0308]: mismatched types
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--> $DIR/assoc-ty.rs:15:36
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LL | let _: <() as Trait>::Output = ();
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| --------------------- ^^ expected associated type, found `()`
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| |
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| expected due to this
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= note: expected associated type `<() as Trait>::Output`
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found unit type `()`
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= help: consider constraining the associated type `<() as Trait>::Output` to `()` or calling a method that returns `<() as Trait>::Output`
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= note: for more information, visit https://doc.rust-lang.org/book/ch19-03-advanced-traits.html
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error: aborting due to 3 previous errors
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Some errors have detailed explanations: E0308, E0380, E0658.
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For more information about an error, try `rustc --explain E0308`.
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