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error[E0277]: the size for values of type `str` cannot be known at compilation time
--> $DIR/dst-rvalue.rs:6:28
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LL | let _x: Box<str> = box *"hello world";
| ^^^^^^^^^^^^^^ doesn't have a size known at compile-time
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= help: the trait `Sized` is not implemented for `str`
= note: the type of a box expression must have a statically known size
error[E0277]: the size for values of type `[isize]` cannot be known at compilation time
--> $DIR/dst-rvalue.rs:10:32
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LL | let _x: Box<[isize]> = box *array;
| ^^^^^^ doesn't have a size known at compile-time
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= help: the trait `Sized` is not implemented for `[isize]`
= note: the type of a box expression must have a statically known size
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0277`.
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