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20 lines
772 B
Plaintext
20 lines
772 B
Plaintext
error[E0277]: `Rc<RefCell<A>>` cannot be sent between threads safely
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--> $DIR/issue-7013.rs:24:19
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LL | let a = A {v: Box::new(B{v: None}) as Box<dyn Foo + Send>};
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| ^^^^^^^^^^^^^^^^^^^^ `Rc<RefCell<A>>` cannot be sent between threads safely
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= help: within `B`, the trait `Send` is not implemented for `Rc<RefCell<A>>`
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note: required because it appears within the type `Option<Rc<RefCell<A>>>`
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--> $SRC_DIR/core/src/option.rs:LL:COL
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note: required because it appears within the type `B`
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--> $DIR/issue-7013.rs:8:8
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LL | struct B {
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| ^
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= note: required for the cast from `Box<B>` to `Box<dyn Foo + Send>`
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error: aborting due to previous error
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For more information about this error, try `rustc --explain E0277`.
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