| error[E0225]: only auto traits can be used as additional traits in a trait object |
| --> $DIR/issue-22560.rs:9:23 |
| | |
| LL | type Test = dyn Add + Sub; |
| | --- ^^^ additional non-auto trait |
| | | |
| | first non-auto trait |
| | |
| = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: Add + Sub {}` |
| = 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> |
| |
| error[E0191]: the value of the associated types `Output` in `Add`, `Output` in `Sub` must be specified |
| --> $DIR/issue-22560.rs:9:17 |
| | |
| LL | type Output; |
| | ----------- `Output` defined here |
| ... |
| LL | type Output; |
| | ----------- `Output` defined here |
| ... |
| LL | type Test = dyn Add + Sub; |
| | ^^^ ^^^ associated type `Output` must be specified |
| | | |
| | associated type `Output` must be specified |
| | |
| help: specify the associated types |
| | |
| LL | type Test = dyn Add<Output = Type> + Sub<Output = Type>; |
| | ~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~ |
| |
| error[E0393]: the type parameter `Rhs` must be explicitly specified |
| --> $DIR/issue-22560.rs:9:17 |
| | |
| LL | trait Add<Rhs=Self> { |
| | ------------------- type parameter `Rhs` must be specified for this |
| ... |
| LL | type Test = dyn Add + Sub; |
| | ^^^ help: set the type parameter to the desired type: `Add<Rhs>` |
| | |
| = note: because of the default `Self` reference, type parameters must be specified on object types |
| |
| error[E0393]: the type parameter `Rhs` must be explicitly specified |
| --> $DIR/issue-22560.rs:9:23 |
| | |
| LL | trait Sub<Rhs=Self> { |
| | ------------------- type parameter `Rhs` must be specified for this |
| ... |
| LL | type Test = dyn Add + Sub; |
| | ^^^ help: set the type parameter to the desired type: `Sub<Rhs>` |
| | |
| = note: because of the default `Self` reference, type parameters must be specified on object types |
| |
| error: aborting due to 4 previous errors |
| |
| Some errors have detailed explanations: E0191, E0225, E0393. |
| For more information about an error, try `rustc --explain E0191`. |