error.txt

src/engine.rs:34:3: 38:4 error: match arms have incompatible types [E0308]
src/engine.rs:34 		match result {
                 		^
src/engine.rs:34:3: 38:4 help: run `rustc --explain E0308` to see a detailed explanation
src/engine.rs:34:3: 38:4 note: expected type `_`
src/engine.rs:34:3: 38:4 note:    found type `()`
src/engine.rs:35:44: 35:75 note: match arm with an incompatible type
src/engine.rs:35 			UpdateResult::ChangeState(new_state) => { self.swap_state(new_state); },
                 			                                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

snippet.rs

match result {
	UpdateResult::ChangeState(new_state) => { self.swap_state(new_state); },
	UpdateResult::Quit => self.quit(),
	UpdateResult::None => (),
}