error[E0057]: this function takes 0 arguments but 1 argument was supplied --> $DIR/wrong_argument_ice-4.rs:2:5 | LL | (|| {})(|| { | _____^^^^^^^_- LL | | LL | | let b = 1; LL | | }); | |_____- argument of type `[closure@$DIR/wrong_argument_ice-4.rs:2:13: 2:15]` unexpected | note: closure defined here --> $DIR/wrong_argument_ice-4.rs:2:6 | LL | (|| {})(|| { | ^^ help: remove the extra argument | LL | (|| {})(); | ~~~~~~~~~ error: aborting due to previous error For more information about this error, try `rustc --explain E0057`.