|  | error[E0716]: temporary value dropped while borrowed | 
|  | --> $DIR/static-reference-to-fn-2.rs:18:22 | 
|  | | | 
|  | LL | fn state1(self_: &mut StateMachineIter) -> Option<&'static str> { | 
|  | |           ----- has type `&mut StateMachineIter<'1>` | 
|  | LL |     self_.statefn = &id(state2 as StateMachineFunc); | 
|  | |     -----------------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^- temporary value is freed at the end of this statement | 
|  | |     |                | | 
|  | |     |                creates a temporary value which is freed while still in use | 
|  | |     assignment requires that borrow lasts for `'1` | 
|  |  | 
|  | error[E0716]: temporary value dropped while borrowed | 
|  | --> $DIR/static-reference-to-fn-2.rs:24:22 | 
|  | | | 
|  | LL | fn state2(self_: &mut StateMachineIter) -> Option<(&'static str)> { | 
|  | |           ----- has type `&mut StateMachineIter<'1>` | 
|  | LL |     self_.statefn = &id(state3 as StateMachineFunc); | 
|  | |     -----------------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^- temporary value is freed at the end of this statement | 
|  | |     |                | | 
|  | |     |                creates a temporary value which is freed while still in use | 
|  | |     assignment requires that borrow lasts for `'1` | 
|  |  | 
|  | error[E0716]: temporary value dropped while borrowed | 
|  | --> $DIR/static-reference-to-fn-2.rs:30:22 | 
|  | | | 
|  | LL | fn state3(self_: &mut StateMachineIter) -> Option<(&'static str)> { | 
|  | |           ----- has type `&mut StateMachineIter<'1>` | 
|  | LL |     self_.statefn = &id(finished as StateMachineFunc); | 
|  | |     -----------------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^- temporary value is freed at the end of this statement | 
|  | |     |                | | 
|  | |     |                creates a temporary value which is freed while still in use | 
|  | |     assignment requires that borrow lasts for `'1` | 
|  |  | 
|  | error[E0515]: cannot return value referencing temporary value | 
|  | --> $DIR/static-reference-to-fn-2.rs:40:5 | 
|  | | | 
|  | LL | /     StateMachineIter { | 
|  | LL | | | 
|  | LL | |         statefn: &id(state1 as StateMachineFunc) | 
|  | | |                   ------------------------------ temporary value created here | 
|  | LL | |     } | 
|  | | |_____^ returns a value referencing data owned by the current function | 
|  | | | 
|  | = help: use `.collect()` to allocate the iterator | 
|  |  | 
|  | error: aborting due to 4 previous errors | 
|  |  | 
|  | Some errors have detailed explanations: E0515, E0716. | 
|  | For more information about an error, try `rustc --explain E0515`. |