vlib/v/checker/tests/map_ops.vv:3:7: error: invalid key: expected `int`, not `rune`
    1 | fn test_map() {
    2 |     mut m := map[int]string{}
    3 |     _ = m[`!`]
      |          ~~~~~
    4 |     m['hi'] = 8
    5 |     m[&m] += 4
vlib/v/checker/tests/map_ops.vv:4:3: error: invalid key: expected `int`, not `string`
    2 |     mut m := map[int]string{}
    3 |     _ = m[`!`]
    4 |     m['hi'] = 8
      |      ~~~~~~
    5 |     m[&m] += 4
    6 |     a := 10
vlib/v/checker/tests/map_ops.vv:4:12: error: cannot assign to `m['hi']`: expected `string`, not `int literal`
    2 |     mut m := map[int]string{}
    3 |     _ = m[`!`]
    4 |     m['hi'] = 8
      |               ^
    5 |     m[&m] += 4
    6 |     a := 10
vlib/v/checker/tests/map_ops.vv:5:3: error: invalid key: expected `int`, not `&map[int]string`
    3 |     _ = m[`!`]
    4 |     m['hi'] = 8
    5 |     m[&m] += 4
      |      ~~~~
    6 |     a := 10
    7 |     ptr := &a
vlib/v/checker/tests/map_ops.vv:5:11: error: invalid right operand: string += int literal
    3 |     _ = m[`!`]
    4 |     m['hi'] = 8
    5 |     m[&m] += 4
      |              ^
    6 |     a := 10
    7 |     ptr := &a
vlib/v/checker/tests/map_ops.vv:5:11: error: cannot assign to `m[&m]`: expected `string`, not `int literal`
    3 |     _ = m[`!`]
    4 |     m['hi'] = 8
    5 |     m[&m] += 4
      |              ^
    6 |     a := 10
    7 |     ptr := &a
vlib/v/checker/tests/map_ops.vv:9:3: error: invalid key: expected `int`, not `&int`; did you mean `n[*ptr]`?
    7 |     ptr := &a
    8 |     mut n := map[int]int{}
    9 |     n[ptr] = 1
      |      ~~~~~
   10 |     _ = ptr in n
   11 | }
vlib/v/checker/tests/map_ops.vv:10:6: error: left operand to `in` does not match the map key type: expected `int`, not `&int`
    8 |     mut n := map[int]int{}
    9 |     n[ptr] = 1
   10 |     _ = ptr in n
      |         ~~~~~~~~
   11 | }