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50 lines
2.0 KiB
Plaintext
50 lines
2.0 KiB
Plaintext
warning: trait objects without an explicit `dyn` are deprecated
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--> $DIR/issue-58734.rs:20:5
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LL | Trait::nonexistent(());
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| ^^^^^
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= warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
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= note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
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= note: `#[warn(bare_trait_objects)]` on by default
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help: if this is a dyn-compatible trait, use `dyn`
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LL | <dyn Trait>::nonexistent(());
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| ++++ +
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error[E0038]: the trait `Trait` is not dyn compatible
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--> $DIR/issue-58734.rs:20:5
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LL | Trait::nonexistent(());
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| ^^^^^ `Trait` is not dyn compatible
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note: for a trait to be dyn compatible it needs to allow building a vtable
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for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
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--> $DIR/issue-58734.rs:4:8
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LL | trait Trait {
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| ----- this trait is not dyn compatible...
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...
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LL | fn dyn_incompatible() -> Self;
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| ^^^^^^^^^^^^^^^^ ...because associated function `dyn_incompatible` has no `self` parameter
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= help: only type `()` implements `Trait`; consider using it directly instead.
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help: consider turning `dyn_incompatible` into a method by giving it a `&self` argument
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LL | fn dyn_incompatible(&self) -> Self;
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| +++++
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help: alternatively, consider constraining `dyn_incompatible` so it does not apply to trait objects
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LL | fn dyn_incompatible() -> Self where Self: Sized;
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| +++++++++++++++++
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error[E0599]: no function or associated item named `nonexistent` found for trait object `dyn Trait` in the current scope
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--> $DIR/issue-58734.rs:20:12
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LL | Trait::nonexistent(());
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| ^^^^^^^^^^^ function or associated item not found in `dyn Trait`
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error: aborting due to 2 previous errors; 1 warning emitted
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Some errors have detailed explanations: E0038, E0599.
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For more information about an error, try `rustc --explain E0038`.
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