vlib/v/checker/tests/optional_method_err.vv:17:10: error: inc_to_limit() returns an option but is missing an `or {}` block
   15 |     mut a := Abc{}
   16 |     for _ in 0 .. 4 {
   17 |         _ := a.inc_to_limit(2)
      |                ~~~~~~~~~~~~~~~
   18 |         eprintln('a: $a')
   19 |     }
