mirror of https://github.com/rust-lang/rust
72 lines
3.6 KiB
Plaintext
72 lines
3.6 KiB
Plaintext
error[E0371]: the object type `(dyn Object + Marker2 + 'static)` automatically implements the trait `Marker1`
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--> $DIR/coherence-impl-trait-for-marker-trait-positive.rs:15:1
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LL | impl Marker1 for dyn Object + Marker2 {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `(dyn Object + Marker2 + 'static)` automatically implements trait `Marker1`
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error[E0321]: traits with a default impl, like `Marker1`, cannot be implemented for trait object `(dyn Object + Marker2 + 'static)`
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--> $DIR/coherence-impl-trait-for-marker-trait-positive.rs:15:1
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LL | impl Marker1 for dyn Object + Marker2 {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: a trait object implements `Marker1` if and only if `Marker1` is one of the trait object's trait bounds
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error[E0371]: the object type `(dyn Object + Marker2 + 'static)` automatically implements the trait `Marker2`
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--> $DIR/coherence-impl-trait-for-marker-trait-positive.rs:18:1
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LL | impl Marker2 for dyn Object + Marker2 {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `(dyn Object + Marker2 + 'static)` automatically implements trait `Marker2`
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error[E0321]: traits with a default impl, like `Marker2`, cannot be implemented for trait object `(dyn Object + Marker2 + 'static)`
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--> $DIR/coherence-impl-trait-for-marker-trait-positive.rs:18:1
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LL | impl Marker2 for dyn Object + Marker2 {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: a trait object implements `Marker2` if and only if `Marker2` is one of the trait object's trait bounds
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error[E0321]: traits with a default impl, like `Marker2`, cannot be implemented for trait object `(dyn Object + 'static)`
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--> $DIR/coherence-impl-trait-for-marker-trait-positive.rs:26:1
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LL | impl Marker2 for dyn Object {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: a trait object implements `Marker2` if and only if `Marker2` is one of the trait object's trait bounds
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error[E0117]: only traits defined in the current crate can be implemented for arbitrary types
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--> $DIR/coherence-impl-trait-for-marker-trait-positive.rs:22:1
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LL | unsafe impl Send for dyn Marker2 {}
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| ^^^^^^^^^^^^^^^^^^^^^-----------
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| | |
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| | `dyn Marker2` is not defined in the current crate
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| impl doesn't use only types from inside the current crate
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= note: define and implement a trait or new type instead
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error[E0321]: cross-crate traits with a default impl, like `Send`, can only be implemented for a struct/enum type, not `(dyn Object + 'static)`
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--> $DIR/coherence-impl-trait-for-marker-trait-positive.rs:27:1
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LL | unsafe impl Send for dyn Object {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't implement cross-crate trait with a default impl for non-struct/enum type
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error[E0321]: cross-crate traits with a default impl, like `Send`, can only be implemented for a struct/enum type, not `(dyn Object + Marker2 + 'static)`
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--> $DIR/coherence-impl-trait-for-marker-trait-positive.rs:28:1
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LL | unsafe impl Send for dyn Object + Marker2 {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't implement cross-crate trait with a default impl for non-struct/enum type
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error[E0321]: traits with a default impl, like `Marker3`, cannot be implemented for generic type `T`
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--> $DIR/coherence-impl-trait-for-marker-trait-positive.rs:32:1
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LL | impl<T: ?Sized> Marker3 for T {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: a trait object implements `Marker3` if and only if `Marker3` is one of the trait object's trait bounds
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error: aborting due to 9 previous errors
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Some errors have detailed explanations: E0117, E0321, E0371.
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For more information about an error, try `rustc --explain E0117`.
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