go back to precise

wangjoshuah · wangjoshuah · commit 7663b0a0a789 · 2017-09-25T14:58:19.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,5 @@
 language: java
-dist: trusty
+dist: precise
 sudo: required
 addons:
   apt:
