| error: trait objects without an explicit `dyn` are deprecated |
| --> $DIR/bare-trait-dont-suggest-dyn.rs:6:33 |
| | |
| LL | fn ord_prefer_dot(s: String) -> Ord { |
| | ^^^ |
| | |
| = 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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html> |
| note: the lint level is defined here |
| --> $DIR/bare-trait-dont-suggest-dyn.rs:5:9 |
| | |
| LL | #![deny(bare_trait_objects)] |
| | ^^^^^^^^^^^^^^^^^^ |
| help: if this is an object-safe trait, use `dyn` |
| | |
| LL | fn ord_prefer_dot(s: String) -> dyn Ord { |
| | +++ |
| |
| error[E0038]: the trait `Ord` cannot be made into an object |
| --> $DIR/bare-trait-dont-suggest-dyn.rs:6:33 |
| | |
| LL | fn ord_prefer_dot(s: String) -> Ord { |
| | ^^^ `Ord` cannot be made into an object |
| | |
| note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety> |
| --> $SRC_DIR/core/src/cmp.rs:LL:COL |
| | |
| = note: the trait cannot be made into an object because it uses `Self` as a type parameter |
| ::: $SRC_DIR/core/src/cmp.rs:LL:COL |
| | |
| = note: the trait cannot be made into an object because it uses `Self` as a type parameter |
| help: consider using an opaque type instead |
| | |
| LL | fn ord_prefer_dot(s: String) -> impl Ord { |
| | ++++ |
| |
| error: aborting due to 2 previous errors |
| |
| For more information about this error, try `rustc --explain E0038`. |
