vlib/v/checker/tests/for_in_with_reserved_type_names.vv:2:6: error: invalid use of reserved type `rune` as value name
    1 | fn main() {
    2 |     for rune in 'runes' {
      |         ~~~~
    3 |         println(rune)
    4 |     }
vlib/v/checker/tests/for_in_with_reserved_type_names.vv:6:6: error: invalid use of reserved type `char` as key name
    4 |     }
    5 | 
    6 |     for char, c in 'runes' {
      |         ~~~~
    7 |         println(c)
    8 |         println(char)