I'm used to programs that, when called without arguments, either do something obvious, or error out with hints to the user how to proceed. matrix-commander-rs does neither:

$ matrix-commander-rs
$ echo $?
0

It'd be great if it printed a short usage text, or said "Missing arguments, please see --help". And exited with non-zero status.

Tested version 1.0.0 (currently latest). (The same behaviour was observed in 0.10.0.)