libusb couldn't open USB device /dev/bus/usb/001/001: Permission denied.
libusb requires write access to USB device nodes.
Couldn't open device
libusb couldn't open USB device /dev/bus/usb/001/002: Permission denied.
libusb requires write access to USB device nodes.
Couldn't open device
libusb couldn't open USB device /dev/bus/usb/001/020: Permission denied.
libusb requires write access to USB device nodes.
Couldn't open device
libusb couldn't open USB device /dev/bus/usb/002/001: Permission denied.
libusb requires write access to USB device nodes.
Couldn't open device
libusb couldn't open USB device /dev/bus/usb/002/002: Permission denied.
libusb requires write access to USB device nodes.
Couldn't open device

Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 001 Device 002: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)

Bus 001 Device 020: ID 0421:043e Nokia Mobile Phones 

Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 002 Device 002: ID 1241:1603 Belkin