error[E0615]: attempted to take value of method `method` on type `Foo` --> $DIR/E0615.rs:11:7 | LL | f.method; | ^^^^^^ method, not a field | help: use parentheses to call the method | LL | f.method(); | ++ error: aborting due to previous error For more information about this error, try `rustc --explain E0615`.