vlib/v/checker/tests/map_of_generic_struct_init_err.vv:6:6: warning: unused variable: `m`
    4 |
    5 | fn main() {
    6 |     mut m := map[string]Item{}
      |         ^
    7 | }
vlib/v/checker/tests/map_of_generic_struct_init_err.vv:6:11: error: generic struct `Item` must specify type parameter, e.g. Item[int]
    4 |
    5 | fn main() {
    6 |     mut m := map[string]Item{}
      |              ~~~~~~~~~~~~~~~~~
    7 | }
