error[E0434]: can't capture dynamic environment in a fn item --> $DIR/issue-3021-d.rs:21:23 | LL | self.v0 = k0 ^ 0x736f6d6570736575; | ^^ | = help: use the `|| { ... }` closure form instead error[E0434]: can't capture dynamic environment in a fn item --> $DIR/issue-3021-d.rs:22:23 | LL | self.v1 = k1 ^ 0x646f72616e646f6d; | ^^ | = help: use the `|| { ... }` closure form instead error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0434`.