-Assert 'fail' failed in rterror_check::Sys::(kernel::Sys::main) (./rterror_check.nit:20)
-,---- Stack trace -- - - -
-| rterror_check::Sys::(kernel::Sys::main) (./rterror_check.nit:18)
-`------------------- - - -
+Assert 'fail' failed (./rterror_check.nit:20)