using trusty

.travis.yml

@@ -3,7 +3,8 @@ python:
   - "3.5"
   - "3.6"
 # command to install dependencies
-sudo: true
+sudo: enabled
+dist: trusty
 addons:
   apt:
     packages:
@@ -15,9 +16,9 @@ install:
   # version is the same.
   - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
   - sudo apt-get -qq update
-  - sudo apt-get -qq install g++-5
-  - sudo apt-get -qq install gcc-5
-  - export CXX="g++-5" CC="gcc-5"
+  - sudo apt-get -qq install g++
+  - sudo apt-get -qq install gcc
+  # - export CXX="g++-5" CC="gcc-5"
   - wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh
   - bash miniconda.sh -b -p $HOME/miniconda
   - export PATH="$HOME/miniconda/bin:$PATH"
@@ -36,7 +37,6 @@ install:
   - conda install pandas
   - conda install scikit-learn
   - conda install cython
-  - conda install libgcc
   - pip install cvxopt
   - pip install cvxpy
   - pip install simpleutils