vlib/v/checker/tests/infix_is_notis_interface_unimplemented_err.vv:8:14: error: `int` doesn't implement method `msg` of interface `IError`
    6 |     if _ := f() {
    7 |     } else {
    8 |         _ = err is int
      |                    ~~~
    9 |     }
   10 |
vlib/v/checker/tests/infix_is_notis_interface_unimplemented_err.vv:8:14: error: `int` doesn't implement method `code` of interface `IError`
    6 |     if _ := f() {
    7 |     } else {
    8 |         _ = err is int
      |                    ~~~
    9 |     }
   10 |
vlib/v/checker/tests/infix_is_notis_interface_unimplemented_err.vv:8:14: error: `int` doesn't implement interface `IError`
    6 |     if _ := f() {
    7 |     } else {
    8 |         _ = err is int
      |                    ~~~
    9 |     }
   10 |
vlib/v/checker/tests/infix_is_notis_interface_unimplemented_err.vv:12:14: error: `int` doesn't implement method `msg` of interface `IError`
   10 | 
   11 |     _ = f() or {
   12 |         _ = err is int
      |                    ~~~
   13 |         0
   14 |     }
vlib/v/checker/tests/infix_is_notis_interface_unimplemented_err.vv:12:14: error: `int` doesn't implement method `code` of interface `IError`
   10 | 
   11 |     _ = f() or {
   12 |         _ = err is int
      |                    ~~~
   13 |         0
   14 |     }
vlib/v/checker/tests/infix_is_notis_interface_unimplemented_err.vv:12:14: error: `int` doesn't implement interface `IError`
   10 | 
   11 |     _ = f() or {
   12 |         _ = err is int
      |                    ~~~
   13 |         0
   14 |     }
vlib/v/checker/tests/infix_is_notis_interface_unimplemented_err.vv:27:17: error: `int` doesn't implement method `some_method` of interface `IAbc`
   25 | fn type_unimplemented_interface() {
   26 |     ivalue := IAbc(Struct{})
   27 |     _ := ivalue is int
      |                    ~~~
   28 | }
vlib/v/checker/tests/infix_is_notis_interface_unimplemented_err.vv:27:17: error: `int` doesn't implement interface `IAbc`
   25 | fn type_unimplemented_interface() {
   26 |     ivalue := IAbc(Struct{})
   27 |     _ := ivalue is int
      |                    ~~~
   28 | }