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error[E0746]: return type cannot have an unboxed trait object
--> $DIR/issue-18107.rs:4:5
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LL | dyn AbstractRenderer
| ^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
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help: use `impl AbstractRenderer` as the return type if all return paths have the same type but you want to expose only the trait in the signature
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LL | impl AbstractRenderer
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help: use a boxed trait object if all return paths implement trait `AbstractRenderer`
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LL | Box<dyn AbstractRenderer>
| ++++ +
error: aborting due to previous error
For more information about this error, try `rustc --explain E0746`.
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