-alt/base_vararg_alt8.nit:64,1--15: Error: arity mismatch; prototype is 'foobar(b: Char, a: Char..., c: Char)'
+alt/base_vararg_alt8.nit:64,1--6: Error: expected at least 3 argument(s) for `foobar(b: Char, a: Char..., c: Char)`; got 2. See introduction at `base_vararg_alt8::Sys::foobar`.