| error[E0277]: the size for values of type `<Self as std::ops::Deref>::Target` cannot be known at compilation time |
| --> $DIR/issue-42312.rs:4:12 |
| | |
| LL | fn baz(_: Self::Target) where Self: Deref {} |
| | ^ doesn't have a size known at compile-time |
| | |
| = help: the trait `std::marker::Sized` is not implemented for `<Self as std::ops::Deref>::Target` |
| = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait> |
| = note: all function arguments must have a statically known size |
| = help: unsized locals are gated as an unstable feature |
| help: consider further restricting the associated type |
| | |
| LL | fn baz(_: Self::Target) where Self: Deref, <Self as std::ops::Deref>::Target: std::marker::Sized {} |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| |
| error[E0277]: the size for values of type `(dyn std::string::ToString + 'static)` cannot be known at compilation time |
| --> $DIR/issue-42312.rs:8:10 |
| | |
| LL | pub fn f(_: dyn ToString) {} |
| | ^ doesn't have a size known at compile-time |
| | |
| = help: the trait `std::marker::Sized` is not implemented for `(dyn std::string::ToString + 'static)` |
| = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait> |
| = note: all function arguments must have a statically known size |
| = help: unsized locals are gated as an unstable feature |
| |
| error: aborting due to 2 previous errors |
| |
| For more information about this error, try `rustc --explain E0277`. |
