vlib/v/checker/tests/struct_field_unsign_type_check_err.vv:3:10: error: cannot assign negative value to unsigned integer type
    1 | struct Foo {
    2 | mut:
    3 |     n u32 = -1
      |             ~~
    4 | }
    5 |
vlib/v/checker/tests/struct_field_unsign_type_check_err.vv:8:6: error: cannot assign negative value to unsigned integer type
    6 | fn main() {
    7 |     mut foo := Foo{
    8 |         n: -1
      |            ~~
    9 |     }
   10 |
vlib/v/checker/tests/struct_field_unsign_type_check_err.vv:11:10: error: cannot assign negative value to unsigned integer type
    9 |     }
   10 | 
   11 |     foo.n = -1
      |             ~~
   12 | }
