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