v/vlib/v/checker/tests/assert_optional_err.out

vlib/v/checker/tests/assert_optional_err.vv:4:9: error: assert can be used only with `bool` expressions, but found `void` instead
    2 |
    3 | fn main(){
    4 |     assert os.truncate("testfile.txt", 6666) or { panic(err) }
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    5 | }