| 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: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0225`. |
