The automatic rotation of system logs deletes your oldest log file, labelled as Archived log #10, pushes the current log to Archived log # 1, and starts a new current-day log file.

Raspbian kernel is Linux 4.9.59-v7+ #1047  (from uname -a)

According to the Bluedroid header files, 0x8 means connection timeout:https://android.googlesource.com/platform/external/bluetooth/bluedroid/+/master/stack/include/gatt_api.h#108