Erro ao tentar instalar o gcc-arm-embedded

Question

Eu uso o Ubuntu 16.04. Eu tento instalar gcc-arm-none-eabi 6 porque gcc-arm-none-eabi 4.9.3 não suporta compilação de contiki. Eu tenho um problema com isso.

Unpacking gcc-arm-embedded (6-2017q2-1~xenial1) ...
dpkg: error processing archive /var/cache/apt/archives/gcc-arm-embedded_6-2017q2-1~xenial1_amd64.deb (--unpack):
 trying to overwrite '/usr/bin/arm-none-eabi-ld', which is also in package binutils-arm-none-eabi 2.26-4ubuntu1+8
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/gcc-arm-embedded_6-2017q2-1~xenial1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)