travis: Fix build env

1st1 · 1st1 · commit ed68ac42c5ca · 2017-04-27T16:10:59.000-04:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,17 @@
 language: node_js
 
 node_js:
-  - "7"
+  - "6"
+
+env:
+  - CXX=g++-4.8
+
+addons:
+  apt:
+    sources:
+      - ubuntu-toolchain-r-test
+    packages:
+      - g++-4.8
 
 install:
   - make
