vlib/v/checker/tests/generics_struct_decl_no_mention_err.vv:4:2: error: generic type name `T` is not mentioned in struct `Foo[U]`
    2 | 
    3 | struct Foo[U] {
    4 |     Bar[T]
      |     ~~~~~~
    5 |     foo U
    6 |     bar P
vlib/v/checker/tests/generics_struct_decl_no_mention_err.vv:6:6: error: generic type name `P` is not mentioned in struct `Foo[U]`
    4 |     Bar[T]
    5 |     foo U
    6 |     bar P
      |         ^
    7 | }
    8 |