| error[E0404]: expected trait, found derive macro `Hash` |
| --> $DIR/issue-37534.rs:1:16 |
| | |
| LL | struct Foo<T: ?Hash> { } |
| | ^^^^ not a trait |
| | |
| help: consider importing this trait instead |
| | |
| LL | use std::hash::Hash; |
| | |
| |
| warning: default bound relaxed for a type parameter, but this does nothing because the given bound is not a default; only `?Sized` is supported |
| --> $DIR/issue-37534.rs:1:12 |
| | |
| LL | struct Foo<T: ?Hash> { } |
| | ^ |
| |
| error[E0392]: parameter `T` is never used |
| --> $DIR/issue-37534.rs:1:12 |
| | |
| LL | struct Foo<T: ?Hash> { } |
| | ^ unused parameter |
| | |
| = help: consider removing `T`, referring to it in a field, or using a marker such as `std::marker::PhantomData` |
| |
| error: aborting due to 2 previous errors; 1 warning emitted |
| |
| Some errors have detailed explanations: E0392, E0404. |
| For more information about an error, try `rustc --explain E0392`. |
