1 error[E0615]: attempted to take value of method `unwrap` on type `Option<{integer}>`
2 --> $DIR/issue-88803-call-expr-method.rs:7:12
5 | ^^^^^^ method, not a field
7 help: remove wrapping parentheses to call the method
13 error: aborting due to previous error
15 For more information about this error, try `rustc --explain E0615`.