gistfile1.txt

struct Number{
     mut i: int
}
impl Number {

    fn mult(&mut self) -> &mut Number{
        self.i *= 2;
        self
    }
}
fn main() {
 
 let mut test = Number {i: 1};

}


/home/maik/hello.rs:19:8: 20:5 error: mismatched types: expected `&mut Number` but found `&mut Number` (lifetime mismatch)
/home/maik/hello.rs:19         self
/home/maik/hello.rs:20     }
/home/maik/hello.rs:17:37: 20:5 note: the anonymous lifetime #2 defined on the block at 17:37...
/home/maik/hello.rs:17     fn mult(&mut self) -> &mut Number{
/home/maik/hello.rs:18         self.i *= 2;
/home/maik/hello.rs:19         self
/home/maik/hello.rs:20     }
/home/maik/hello.rs:17:37: 20:5 note: ...does not necessarily outlive the anonymous lifetime #1 defined on the block at 17:37
/home/maik/hello.rs:17     fn mult(&mut self) -> &mut Number{
/home/maik/hello.rs:18         self.i *= 2;
/home/maik/hello.rs:19         self
/home/maik/hello.rs:20     }