vlib/v/checker/tests/assign_to_typeless_variable_err.vv:2:3: warning: unused variable: `val`
    1 | fn main() {
    2 |   val := {}
      |   ~~~
    3 |   val = 1
    4 | }
vlib/v/checker/tests/assign_to_typeless_variable_err.vv:2:10: error: invalid empty map initialisation syntax, use e.g. map[string]int{} instead
    1 | fn main() {
    2 |   val := {}
      |          ~~
    3 |   val = 1
    4 | }
vlib/v/checker/tests/assign_to_typeless_variable_err.vv:3:3: error: `val` is immutable, declare it with `mut` to make it mutable
    1 | fn main() {
    2 |   val := {}
    3 |   val = 1
      |   ~~~
    4 | }
