1 error[E0435]: attempt to use a non-constant value in a constant
2 --> $DIR/issue-3668-2.rs:2:27
4 LL | static child: isize = x + 1;
5 | ----- ^ non-constant value
7 | help: consider using `let` instead of `static`
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0435`.