Does not work on Arch linux

[RoastBeefer00]

I am importing using use systemctl::*; and running the following code:

let services = list_units(None, None).unwrap();
println!("Services: {:?}", services);

and I get Services: [] no matter what I do.

I validated that systemctl is in /usr/bin/systemctl and when I run the actual commands locally I do not have any problems. Am I missing something obvious here?