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error[E0004]: non-exhaustive patterns: `box _` not covered
--> $DIR/issue-3601.rs:30:44
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LL | box NodeKind::Element(ed) => match ed.kind {
| ^^^^^^^ pattern `box _` not covered
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note: `Box<ElementKind>` defined here
--> $SRC_DIR/alloc/src/boxed.rs:LL:COL
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LL | / pub struct Box<
LL | | T: ?Sized,
LL | | #[unstable(feature = "allocator_api", issue = "32838")] A: Allocator = Global,
LL | | >(Unique<T>, A);
| |_^
= note: the matched value is of type `Box<ElementKind>`
help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
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LL ~ box ElementKind::HTMLImageElement(ref d) if d.image.is_some() => { true }
LL + box _ => todo!()
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error: aborting due to previous error
For more information about this error, try `rustc --explain E0004`.
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