FIX: Trying to fix CI...

.gitlab-ci.yml

 before_script:
-    - apt-get update
-    - apt-get install -y -qq make cmake libboost-test-dev gem
     - echo "deb http://ftp.us.debian.org/debian unstable main contrib non-free" > /etc/apt/sources.list.d/unstable.list
+    - apt-get update
+    - apt-get install -y -qq make cmake libboost-test-dev
     - apt-get install -y gcc-5
-    - gem install funit
     - ./build.sh
 
 run_tests: