| error[E0225]: only auto traits can be used as additional traits in a trait object |
| --> $DIR/E0225.rs:6:36 |
| | |
| LL | let _: Box<dyn std::io::Read + std::io::Write>; |
| | ------------- ^^^^^^^^^^^^^^ |
| | | | |
| | | additional non-auto trait |
| | | trait alias used in trait object type (additional use) |
| | first non-auto trait |
| | trait alias used in trait object type (first use) |
| |
| error[E0225]: only auto traits can be used as additional traits in a trait object |
| --> $DIR/E0225.rs:8:20 |
| | |
| LL | trait Foo = std::io::Read + std::io::Write; |
| | ------------- -------------- additional non-auto trait |
| | | |
| | first non-auto trait |
| ... |
| LL | let _: Box<dyn Foo>; |
| | ^^^ |
| | | |
| | trait alias used in trait object type (additional use) |
| | trait alias used in trait object type (first use) |
| |
| error: aborting due to 2 previous errors |
| |
| For more information about this error, try `rustc --explain E0225`. |