| error[E0277]: `()` doesn't implement `std::fmt::Display` |
| --> $DIR/doesnt-satisfy.rs:6:17 |
| | |
| LL | fn bar() -> () {} |
| | ^^ `()` cannot be formatted with the default formatter |
| | |
| = help: the trait `std::fmt::Display` is not implemented for `()` |
| = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead |
| note: required by a bound in `Foo::{opaque#0}` |
| --> $DIR/doesnt-satisfy.rs:2:22 |
| | |
| LL | fn bar() -> impl std::fmt::Display; |
| | ^^^^^^^^^^^^^^^^^ required by this bound in `Foo::{opaque#0}` |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0277`. |
