<verbatim>
 cat

Warning (#<thread: monitor job>): in thread: bad argument type - not a pointer: #f

        Call history:

        db.scm:277: k537
        db.scm:277: g541
        tests.scm:729: sqlite3#execute          <--

Error: uncaught exception: #<condition: (exn type)>

        Call history:

        launch.scm:358: thread-join!            <--
</verbatim>