1 // Tests that two closures cannot simultaneously have mutable 2 // access to the variable, whether that mutable access be used 3 // for direct assignment or for taking mutable ref. Issue #6801. 4 5 #![feature(rustc_attrs)] 6 7 #[rustc_on_unimplemented( 8 message="the message" 9 label="the label" //~ ERROR expected `,`, found `label` 10 )] 11 trait T {} 12 main()13fn main() { } 14