| error[E0277]: the trait bound `U: std::marker::Copy` is not satisfied |
| --> $DIR/wf-fn-where-clause.rs:8:24 |
| | |
| LL | trait ExtraCopy<T:Copy> { } |
| | ----------------------- required by `ExtraCopy` |
| LL | |
| LL | fn foo<T,U>() where T: ExtraCopy<U> |
| | ^^^^^^^^^^^^ the trait `std::marker::Copy` is not implemented for `U` |
| | |
| help: consider restricting this type parameter with `where U: std::marker::Copy` |
| --> $DIR/wf-fn-where-clause.rs:8:10 |
| | |
| LL | fn foo<T,U>() where T: ExtraCopy<U> |
| | ^ |
| |
| error[E0277]: the size for values of type `(dyn std::marker::Copy + 'static)` cannot be known at compilation time |
| --> $DIR/wf-fn-where-clause.rs:12:16 |
| | |
| LL | fn bar() where Vec<dyn Copy>:, {} |
| | ^^^^^^^^^^^^^ doesn't have a size known at compile-time |
| | |
| = help: the trait `std::marker::Sized` is not implemented for `(dyn std::marker::Copy + 'static)` |
| = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait> |
| = note: required by `std::vec::Vec` |
| |
| error[E0038]: the trait `std::marker::Copy` cannot be made into an object |
| --> $DIR/wf-fn-where-clause.rs:12:16 |
| | |
| LL | fn bar() where Vec<dyn Copy>:, {} |
| | ^^^^^^^^^^^^^ the trait `std::marker::Copy` cannot be made into an object |
| | |
| = note: the trait cannot be made into an object because it requires `Self: Sized` |
| |
| error: aborting due to 3 previous errors |
| |
| Some errors have detailed explanations: E0038, E0277. |
| For more information about an error, try `rustc --explain E0038`. |