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error[E0277]: the size for values of type `X` cannot be known at compilation time
--> $DIR/unsized-trait-impl-self-type.rs:10:27
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LL | impl<X: ?Sized> T3<X> for S5<X> {
| - ^^^^^ doesn't have a size known at compile-time
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| this type parameter needs to be `std::marker::Sized`
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note: required by a bound in `S5`
--> $DIR/unsized-trait-impl-self-type.rs:8:11
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LL | struct S5<Y>(Y);
| ^ required by this bound in `S5`
help: you could relax the implicit `Sized` bound on `Y` if it were used through indirection like `&Y` or `Box<Y>`
--> $DIR/unsized-trait-impl-self-type.rs:8:11
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LL | struct S5<Y>(Y);
| ^ - ...if indirection were used here: `Box<Y>`
| |
| this could be changed to `Y: ?Sized`...
help: consider removing the `?Sized` bound to make the type parameter `Sized`
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LL - impl<X: ?Sized> T3<X> for S5<X> {
LL + impl<X> T3<X> for S5<X> {
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error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.
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