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error[E0010]: allocations are not allowed in statics
--> $DIR/issue-7364.rs:6:37
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LL | static boxed: Box<RefCell<isize>> = box RefCell::new(0);
| ^^^^^^^^^^^^^^^^^^^ allocation not allowed in statics
error[E0019]: static contains unimplemented expression type
--> $DIR/issue-7364.rs:6:41
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LL | static boxed: Box<RefCell<isize>> = box RefCell::new(0);
| ^^^^^^^^^^^^^^^
error[E0277]: `std::cell::RefCell<isize>` cannot be shared between threads safely
--> $DIR/issue-7364.rs:6:1
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LL | static boxed: Box<RefCell<isize>> = box RefCell::new(0);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `std::cell::RefCell<isize>` cannot be shared between threads safely
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= help: the trait `std::marker::Sync` is not implemented for `std::cell::RefCell<isize>`
= note: required because of the requirements on the impl of `std::marker::Sync` for `std::ptr::Unique<std::cell::RefCell<isize>>`
= note: required because it appears within the type `std::boxed::Box<std::cell::RefCell<isize>>`
= note: shared static variables must have a type that implements `Sync`
error: aborting due to 3 previous errors
Some errors occurred: E0010, E0019, E0277.
For more information about an error, try `rustc --explain E0010`.
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