bolt_sips_travis.diff

diff --git a/.travis.yml b/.travis.yml
index c495e39..3e67ca3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,16 +6,8 @@ addons:
   apt:
     sources:
       - ubuntu-toolchain-r-test
-      - llvm-toolchain-precise-3.6
-      - llvm-toolchain-precise-3.7
-      - llvm-toolchain-precise-3.8
     packages:
-      - g++-4.9
-      - g++-5
       - g++-6
-      - clang-3.6
-      - clang-3.7
-      - clang-3.8
       - ninja-build
 cache:
   directories:
@@ -23,28 +15,8 @@ cache:
 env:
   global:
     - PATH=$HOME/cmake/bin:$PATH
-matrix:
-  include:
-    - otp_release: 17.0
-      env: CXX=g++-6 CC=gcc-6
-    - otp_release: 17.5
-      env: CXX=g++-6 CC=gcc-6
-    - otp_release: 18.0
-      env: CXX=g++-6 CC=gcc-6
-    - otp_release: 18.3
-      env: CXX=g++-6 CC=gcc-6
-    - otp_release: 19.0
-      env: CXX=g++-4.9 CC=gcc-4.9
-    - otp_release: 19.0
-      env: CXX=g++-5 CC=gcc-5
-    - otp_release: 19.0
-      env: CXX=g++-6 CC=gcc-6
-    - otp_release: 19.0
-      env: CXX=clang++-3.6 CC=clang-3.6
-    - otp_release: 19.0
-      env: CXX=clang++-3.7 CC=clang-3.7
-    - otp_release: 19.0
-      env: CXX=clang++-3.8 CC=clang-3.8
+    - CXX=g++-6
+    - CC=gcc-6
 
 elixir:
   - 1.3