1 error[E0010]: allocations are not allowed in statics
2 --> $DIR/issue-7364.rs:16:37
4 LL | static boxed: Box<RefCell<isize>> = box RefCell::new(0);
5 | ^^^^^^^^^^^^^^^^^^^ allocation not allowed in statics
7 error[E0277]: `std::cell::RefCell<isize>` cannot be shared between threads safely
8 --> $DIR/issue-7364.rs:16:1
10 LL | static boxed: Box<RefCell<isize>> = box RefCell::new(0);
11 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `std::cell::RefCell<isize>` cannot be shared between threads safely
13 = help: the trait `std::marker::Sync` is not implemented for `std::cell::RefCell<isize>`
14 = note: required because of the requirements on the impl of `std::marker::Sync` for `std::ptr::Unique<std::cell::RefCell<isize>>`
15 = note: required because it appears within the type `std::boxed::Box<std::cell::RefCell<isize>>`
16 = note: shared static variables must have a type that implements `Sync`
18 error: aborting due to 2 previous errors
20 Some errors occurred: E0010, E0277.
21 For more information about an error, try `rustc --explain E0010`.