output of service --status-all written neither to stdout nor stderr

The output of `sudo service --status-all` is written neither to stdout, nor stderr as shown by failing piping of command output, e.g. `sudo service --status-all 2> /dev/null 1> /dev/null` still writes to terminal. This is unnecessary and prevents easy usage of tools like `grep`, `less`, etc. and furthermore undocumented.

experienced with version `service ver. 0.91-ubuntu1` on Ubuntu 14.04