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error[E0277]: the size for values of type `Self` cannot be known at compilation time
--> $DIR/issue-20005.rs:8:5
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LL | trait From<Src> {
| --------------- required by `From`
...
LL | / fn to<Dst>(
LL | | self
LL | | ) -> <Dst as From<Self>>::Result where Dst: From<Self> {
| | - help: consider further restricting `Self`: `, Self: std::marker::Sized`
LL | | From::from(self)
LL | | }
| |_____^ doesn't have a size known at compile-time
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= help: the trait `std::marker::Sized` is not implemented for `Self`
= note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.
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