error[E0599]: no method named `boom` found for reference `&Obj` in the current scope --> $DIR/issue-3707.rs:10:14 | LL | self.boom(); | -----^^^^ | | | | | this is an associated function, not a method | help: use associated function syntax instead: `Obj::boom` | = note: found the following associated functions; to be used as methods, functions must have a `self` parameter note: the candidate is defined in an impl for the type `Obj` --> $DIR/issue-3707.rs:6:5 | LL | pub fn boom() -> bool { | ^^^^^^^^^^^^^^^^^^^^^ error: aborting due to previous error For more information about this error, try `rustc --explain E0599`.