fix travis.yml for building test

.travis.yml

@@ -1,27 +1,43 @@
+ language: rust
 matrix:
   include:
     # works on Precise and Trusty
     - os: linux
+    - dist: xenial
       compiler: clang
+    
+  
       addons:
         apt:
           sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-precise-3.7']
-          packages: ['clang-3.7', 'g++-8']
+          packages: ['clang-3.7', 'g++-5']
+ 
+
+
+
+before_script:
+- export PATH="$PATH:$HOME/.cargo/bin"
+
 
 before_install:
+
+ - gem install bundler
+ - curl -sSL https://sh.rustup.rs | sh -s -- -y --default-toolchain=nightly --profile=minimal
+ - export PATH="$PATH:$HOME/.cargo/bin"
  - sudo add-apt-repository ppa:beineri/opt-qt591-xenial -y
  - sudo apt-get update -qq
  - sudo apt-get install qt59base qt59websockets libgl1-mesa-dev
  - source /opt/qt59/bin/qt59-env.sh
-
+ 
 script:
+
  - qmake -v
  - clang++ -v
- - g++-8 -v
+ - g++-5 -v
  - qmake silentdragon-lite.pro CONFIG+=release -spec linux-clang
  - make CC=clang CXX=clang++ -j2
  - make distclean
  - qmake silentdragon-lite.pro CONFIG+=release -spec linux-g++
  - res/libsodium/buildlibsodium.sh
- - make CC=gcc-8 CXX=g++-8 -j2
+ - make CC=gcc-5 CXX=g++-5 -j2