003+ #0 [internal function]: FailStream->stream_open()
004+ #1 %s/user-stream-error.php(9): fopen()
003- #0 [internal function]: FailStream->stream_open('mystream://foo', 'r', 0, NULL)
004- #1 %s%euser-stream-error.php(%d): fopen('mystream://foo', 'r')