From d267dd2c1308daa794055cd2817773f5597217f0 Mon Sep 17 00:00:00 2001
From: Jay Satiro <raysatiro@yahoo.com>
Date: Mon, 26 Mar 2018 18:29:30 -0400
Subject: [PATCH] travis: enable apt retry on fail

This is a workaround for an unsolved travis issue that is causing CI
instances to sporadically fail due to 'unable to connect' issues during
apt stage.

Ref: https://github.com/travis-ci/travis-ci/issues/8507
Ref: https://github.com/travis-ci/travis-ci/issues/9112#issuecomment-376305909
---
 .travis.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index 0bb19fb9f..e80b585ac 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,8 @@ language: c
 sudo: required
 addons:
     apt:
+        config:
+            retries: true
         sources:
             - ubuntu-toolchain-r-test
             - llvm-toolchain-precise-3.9