error[E0061]: this method takes 1 argument but 2 arguments were supplied --> $DIR/wrong_argument_ice-3.rs:9:16 | LL | groups.push(new_group, vec![process]); | ^^^^ ------------- unexpected argument of type `Vec<&Process>` | note: expected `(Vec, Vec)`, found `Vec` --> $DIR/wrong_argument_ice-3.rs:9:21 | LL | groups.push(new_group, vec![process]); | ^^^^^^^^^ = note: expected tuple `(Vec, Vec)` found struct `Vec` note: method defined here --> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL help: remove the extra argument | LL - groups.push(new_group, vec![process]); LL + groups.push(/* (Vec, Vec) */); | error: aborting due to previous error For more information about this error, try `rustc --explain E0061`.