Unable to install

Wanted to try out mycroft on the desktop before setting it up on the raspi. Running Linux Mint (x64)

./build_host_setup.sh ran without any issues

But dev_setup.sh failes:

=1.3->pyOpenSSL==16.0.0->-r requirements.txt (line 6))
Collecting enum34 (from cryptography>=1.3->pyOpenSSL==16.0.0->-r requirements.txt (line 6))
Using cached enum34-1.1.6-py2-none-any.whl
Collecting ipaddress (from cryptography>=1.3->pyOpenSSL==16.0.0->-r requirements.txt (line 6))
Using cached ipaddress-1.0.16-py27-none-any.whl
Collecting cffi>=1.4.1 (from cryptography>=1.3->pyOpenSSL==16.0.0->-r requirements.txt (line 6))
Using cached cffi-1.7.0.tar.gz
Complete output from command python setup.py egg_info:
_configtest.c:1:0: internal compiler error: Segmentation fault
__thread int some_threadlocal_variable_42;
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.8/README.Bugs> for instructions.
Preprocessed source stored into /tmp/ccH6vKTP.out file, please attach this to your bugreport.
_configtest.c:1:0: internal compiler error: Segmentation fault
int some_regular_variable_42;
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.8/README.Bugs> for instructions.
Preprocessed source stored into /tmp/cc1HCH4S.out file, please attach this to your bugreport.

    No working compiler found, or bogus compiler options
    passed to the compiler from Python's distutils module.
    See the error messages above.
    (If they are about -mno-fused-madd and you are on OS/X 10.8,
    see http://stackoverflow.com/questions/22313407/ .)

----------------------------------------

Command “python setup.py egg_info” failed with error code 1 in /tmp/pip-build-aZVJz4/cffi
You are using pip version 7.1.2, however version 8.1.2 is available.
You should consider upgrading via the ‘pip install --upgrade pip’ command.