| error[E0403]: the name `T` is already used for a generic parameter in this item's generic parameters |
| --> $DIR/issue-86756.rs:1:14 |
| | |
| LL | trait Foo<T, T = T> {} |
| | - ^ already used |
| | | |
| | first use of `T` |
| |
| error[E0412]: cannot find type `dyn` in this scope |
| --> $DIR/issue-86756.rs:5:10 |
| | |
| LL | eq::<dyn, Foo> |
| | ^^^ not found in this scope |
| |
| warning: trait objects without an explicit `dyn` are deprecated |
| --> $DIR/issue-86756.rs:5:15 |
| | |
| LL | eq::<dyn, Foo> |
| | ^^^ |
| | |
| = 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: `#[warn(bare_trait_objects)]` on by default |
| help: if this is a dyn-compatible trait, use `dyn` |
| | |
| LL | eq::<dyn, dyn Foo> |
| | +++ |
| |
| error[E0107]: missing generics for trait `Foo` |
| --> $DIR/issue-86756.rs:5:15 |
| | |
| LL | eq::<dyn, Foo> |
| | ^^^ expected at least 1 generic argument |
| | |
| note: trait defined here, with at least 1 generic parameter: `T` |
| --> $DIR/issue-86756.rs:1:7 |
| | |
| LL | trait Foo<T, T = T> {} |
| | ^^^ - |
| help: add missing generic argument |
| | |
| LL | eq::<dyn, Foo<T>> |
| | +++ |
| |
| error: aborting due to 3 previous errors; 1 warning emitted |
| |
| Some errors have detailed explanations: E0107, E0403, E0412. |
| For more information about an error, try `rustc --explain E0107`. |
