filter_test stdout

OSError error(2): No such file or directory
OSError error(2): No such file or directory
OSError error(2): No such file or directory
OSError error(2): No such file or directory
OSError error(2): No such file or directory
OSError error(2): No such file or directory
OSError error(2): No such file or directory
OSError error(2): No such file or directory
OSError error(2): No such file or directory
OSError error(2): No such file or directory
OSError error(2): No such file or directory
OSError error(2): No such file or directory
OSError error(2): No such file or directory
OSError error(2): No such file or directory