rust/src/test/ui/unsized7.stderr

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error[E0277]: the size for values of type `X` cannot be known at compilation time
--> $DIR/unsized7.rs:12:21
|
LL | impl<X: ?Sized + T> T1<X> for S3<X> {
| ^^^^^ doesn't have a size known at compile-time
|
= help: the trait `std::marker::Sized` is not implemented for `X`
= note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
= help: consider adding a `where X: std::marker::Sized` bound
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.