message: Temporarily disable clang 3.9
diff: @@ -63,22 +63,6 @@ matrix:
  - MATRIX_EVAL="CC=gcc-8 && CXX=g++-8"
  compiler: g++-8
  - - os: linux
  - before_install:
  - - sudo apt-get update
  - - sudo apt-get purge g++
  - - sudo apt-get install clang-3.9
  - - CC=clang-3.9 && CXX=clang++-3.9
  - addons:
  - apt:
  - sources:
  - - ubuntu-toolchain-r-test
  - packages:
  - - ninja-build
  - - xorg-dev
  - - libglu1-mesa-dev
  - compiler: clang++-3.9
  -
  - os: linux
  before_install:
  - sudo apt-get update
  