I would also make sure to reboot the phone and the PC before trying again. And yes, some cables are for charging only, and some will transfer data but only at USB 2.0 speeds (very slow) and some are ...
Run with cargo run. If you pass a capture filename as an argument, Packetry will attempt to load it. The current supported file format is a .pcap file with the LINKTYPE_USB_2_0 link layer header type.