it looks like /, the root of your filesystem, isn’t owned by root (the super-admin user). Arti, and by extension oniux, makes sure its files can only be mangled by the current user and root. Any idea why / wouldn’t be owned by root? This seems like a strange setup, likely to cause issues with more than Arti.
This can mean any number of things. It could indicate the command you tried to run couldn’t be found in your PATH. Could you run the command again with RUST_LOG=debug, to help identify at which step this error was emitted?