vlib/v/checker/tests/must_use.vv:22:2: warning: return value must be used, function `f` was tagged with `@[must_use]`
   20 | 
   21 | fn main() {
   22 |     f()
      |     ~~~
   23 |     g()
   24 |     h()
vlib/v/checker/tests/must_use.vv:29:4: warning: return value must be used, method `m` was tagged with `@[must_use]`
   27 |     println(h())
   28 |     a := Abc(5)
   29 |     a.m()
      |       ~~~
   30 |     println(a.m())
   31 | }