"%![sc-]+S, %![trace-]+t", stream_class, trace);
BT_ASSERT_PRE(stream_id_is_unique(trace, stream_class, id),
"Duplicate stream ID: %![trace-]+t, id=%" PRIu64, trace, id);
"%![sc-]+S, %![trace-]+t", stream_class, trace);
BT_ASSERT_PRE(stream_id_is_unique(trace, stream_class, id),
"Duplicate stream ID: %![trace-]+t, id=%" PRIu64, trace, id);