vlib/v/checker/tests/array_sort_err.vv:3:6: error: expected 0 or 1 argument, but got 2
    1 | fn main() {
    2 |     mut arr := [3, 2, 1]
    3 |     arr.sort(a < b, a)
      |         ~~~~~~~~~~~~~~
    4 |     arr.sort(a == b)
    5 |     arr.sort(a > a)
vlib/v/checker/tests/array_sort_err.vv:4:6: error: `.sort()` can only use `<` or `>` comparison
    2 |     mut arr := [3, 2, 1]
    3 |     arr.sort(a < b, a)
    4 |     arr.sort(a == b)
      |         ~~~~~~~~~~~~
    5 |     arr.sort(a > a)
    6 |     arr.sort(c > d)
vlib/v/checker/tests/array_sort_err.vv:5:6: error: `.sort()` cannot use same argument
    3 |     arr.sort(a < b, a)
    4 |     arr.sort(a == b)
    5 |     arr.sort(a > a)
      |         ~~~~~~~~~~~
    6 |     arr.sort(c > d)
    7 | }
vlib/v/checker/tests/array_sort_err.vv:6:11: error: can not access external variable `c`
    4 |     arr.sort(a == b)
    5 |     arr.sort(a > a)
    6 |     arr.sort(c > d)
      |              ^
    7 | }
vlib/v/checker/tests/array_sort_err.vv:6:6: error: `.sort()` can only use `a` or `b` as argument, e.g. `arr.sort(a < b)`
    4 |     arr.sort(a == b)
    5 |     arr.sort(a > a)
    6 |     arr.sort(c > d)
      |         ~~~~~~~~~~~
    7 | }
vlib/v/checker/tests/array_sort_err.vv:6:11: error: undefined ident: `c`
    4 |     arr.sort(a == b)
    5 |     arr.sort(a > a)
    6 |     arr.sort(c > d)
      |              ^
    7 | }
vlib/v/checker/tests/array_sort_err.vv:6:15: error: undefined ident: `d`
    4 |     arr.sort(a == b)
    5 |     arr.sort(a > a)
    6 |     arr.sort(c > d)
      |                  ^
    7 | }