mirror of https://github.com/rust-lang/rust
14 lines
702 B
Plaintext
14 lines
702 B
Plaintext
error[E0277]: the size for values of type `dyn ToString` cannot be known at compilation time
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--> $DIR/issue-58355.rs:5:14
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LL | x = Some(Box::new(callback));
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| ^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
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= help: within `fn() -> dyn ToString`, the trait `Sized` is not implemented for `dyn ToString`, which is required by `fn() -> dyn ToString: Fn()`
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= note: required because it appears within the type `fn() -> dyn ToString`
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= note: required for the cast from `Box<fn() -> dyn ToString>` to `Box<dyn Fn() -> (dyn ToString + 'static)>`
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0277`.
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