rust/tests/ui/arc_with_non_send_sync.stderr

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error: usage of `Arc<T>` where `T` is not `Send` or `Sync`
--> $DIR/arc_with_non_send_sync.rs:19:13
|
LL | let b = Arc::new(RefCell::new(42));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: consider using `Rc<T>` instead or wrapping `T` in a std::sync type like `Mutex<T>`
= note: `-D clippy::arc-with-non-send-sync` implied by `-D warnings`
error: aborting due to previous error