I can see recent logs in that directory in my image.
Jan 19 10:19:40 Puppy kernel: [ 6564.385620] ***** Jan 19 10:19:46 Puppy kernel: [ 6570.117187] musb_hdrc musb_hdrc: remove, state 4 Jan 19 10:19:46 Puppy kernel: [ 6570.117309] usb usb1: USB disconnect, address 1 Jan 19 10:19:46 Puppy kernel: [ 6570.118164] musb_hdrc musb_hdrc: USB bus 1 deregistered Jan 19 10:19:48 Puppy kernel: Kernel logging (proc) stopped.