Ошибка при apt upgrade на dietpi jessie

Ошибка при apt upgrade на dietpi jessie. Не знаю, как решить...

Preparing to unpack .../libc6_2.19-18+deb8u10_armhf.deb ...
readlink: unrecognized option: m
BusyBox v1.26.2 (2017-01-10 16:10:07 GMT) multi-call binary.

Usage: readlink [-fnv] FILE

Display the value of a symlink

    -f  Canonicalize by following all symlinks
    -n  Don't add newline
    -v  Verbose
dpkg: error processing archive /var/cache/apt/archives/libc6_2.19-18+deb8u10_armhf.deb (--unpack):
 subprocess new pre-installation script returned error exit status 1
Errors were encountered while processing:
 /var/cache/apt/archives/libc6_2.19-18+deb8u10_armhf.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)