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105 lines
5.2 KiB
Plaintext
105 lines
5.2 KiB
Plaintext
error[E0658]: `?Trait` is not permitted in trait object types
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--> $DIR/trait-object-trait-parens.rs:8:24
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LL | let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>;
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| ^^^^^^^^
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= help: add `#![feature(more_maybe_bounds)]` 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= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date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[E0658]: `?Trait` is not permitted in trait object types
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--> $DIR/trait-object-trait-parens.rs:13:16
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LL | let _: Box<?Sized + (for<'a> Trait<'a>) + (Obj)>;
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| ^^^^^^
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= help: add `#![feature(more_maybe_bounds)]` 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= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date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[E0658]: `?Trait` is not permitted in trait object types
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--> $DIR/trait-object-trait-parens.rs:18:44
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LL | let _: Box<for<'a> Trait<'a> + (Obj) + (?Sized)>;
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| ^^^^^^^^
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= help: add `#![feature(more_maybe_bounds)]` 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= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
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warning: trait objects without an explicit `dyn` are deprecated
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--> $DIR/trait-object-trait-parens.rs:8:16
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LL | let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>;
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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 an object-safe trait, use `dyn`
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LL | let _: Box<dyn (Obj) + (?Sized) + (for<'a> Trait<'a>)>;
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| +++
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error[E0225]: only auto traits can be used as additional traits in a trait object
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--> $DIR/trait-object-trait-parens.rs:8:35
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LL | let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>;
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| ----- ^^^^^^^^^^^^^^^^^^^ additional non-auto trait
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| |
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| first non-auto trait
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= help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: Obj + for<'a> Trait<'a> {}`
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= note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
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warning: trait objects without an explicit `dyn` are deprecated
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--> $DIR/trait-object-trait-parens.rs:13:16
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LL | let _: Box<?Sized + (for<'a> Trait<'a>) + (Obj)>;
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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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help: if this is an object-safe trait, use `dyn`
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LL | let _: Box<dyn ?Sized + (for<'a> Trait<'a>) + (Obj)>;
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| +++
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error[E0225]: only auto traits can be used as additional traits in a trait object
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--> $DIR/trait-object-trait-parens.rs:13:47
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LL | let _: Box<?Sized + (for<'a> Trait<'a>) + (Obj)>;
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| ------------------- ^^^^^ additional non-auto trait
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| |
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| first non-auto trait
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= help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: for<'a> Trait<'a> + Obj {}`
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= note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
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warning: trait objects without an explicit `dyn` are deprecated
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--> $DIR/trait-object-trait-parens.rs:18:16
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LL | let _: Box<for<'a> Trait<'a> + (Obj) + (?Sized)>;
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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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help: if this is an object-safe trait, use `dyn`
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LL | let _: Box<dyn for<'a> Trait<'a> + (Obj) + (?Sized)>;
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| +++
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error[E0225]: only auto traits can be used as additional traits in a trait object
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--> $DIR/trait-object-trait-parens.rs:18:36
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LL | let _: Box<for<'a> Trait<'a> + (Obj) + (?Sized)>;
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| ----------------- ^^^^^ additional non-auto trait
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| |
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| first non-auto trait
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= help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: for<'a> Trait<'a> + Obj {}`
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= note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
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error: aborting due to 6 previous errors; 3 warnings emitted
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Some errors have detailed explanations: E0225, E0658.
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For more information about an error, try `rustc --explain E0225`.
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