| warning: trait objects without an explicit `dyn` are deprecated |
| --> $DIR/spurious-dyn-compat-errors-58734.rs:21:5 |
| | |
| LL | Trait::nonexistent(()); |
| | ^^^^^ |
| | |
| = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! |
| = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html> |
| = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default |
| help: if this is a dyn-compatible trait, use `dyn` |
| | |
| LL | <dyn Trait>::nonexistent(()); |
| | ++++ + |
| |
| error[E0038]: the trait `Trait` is not dyn compatible |
| --> $DIR/spurious-dyn-compat-errors-58734.rs:21:5 |
| | |
| LL | Trait::nonexistent(()); |
| | ^^^^^ `Trait` is not dyn compatible |
| | |
| note: for a trait to be dyn compatible it needs to allow building a vtable |
| for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility> |
| --> $DIR/spurious-dyn-compat-errors-58734.rs:5:8 |
| | |
| LL | trait Trait { |
| | ----- this trait is not dyn compatible... |
| ... |
| LL | fn dyn_incompatible() -> Self; |
| | ^^^^^^^^^^^^^^^^ ...because associated function `dyn_incompatible` has no `self` parameter |
| = help: only type `()` implements `Trait`; consider using it directly instead. |
| help: consider turning `dyn_incompatible` into a method by giving it a `&self` argument |
| | |
| LL | fn dyn_incompatible(&self) -> Self; |
| | +++++ |
| help: alternatively, consider constraining `dyn_incompatible` so it does not apply to trait objects |
| | |
| LL | fn dyn_incompatible() -> Self where Self: Sized; |
| | +++++++++++++++++ |
| |
| error: aborting due to 1 previous error; 1 warning emitted |
| |
| For more information about this error, try `rustc --explain E0038`. |
