From 3868df83330bb897be996604df3862639abbf002 Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@gmail.com>
Date: Sat, 31 Aug 2019 17:03:26 +0900
Subject: Try to fix apt-get update error for trusty (take 2)

https://travis-ci.org/ruby/ruby/jobs/579116510
---
 .travis.yml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to '.travis.yml')

diff --git a/.travis.yml b/.travis.yml
index 028ac44698..01d1007574 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -92,7 +92,7 @@ env:
     #       - ubuntu-toolchain-r-test
     before_install:
       - tool/travis_retry.sh sudo -E apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
-      - tool/travis_retry.sh sudo bash -c "rm -rf '${TRAVIS_ROOT}/var/lib/apt/lists/'* && exec apt-get update ${APT_GET_UPDATE_OPTIONS} -yq"
+      - tool/travis_retry.sh sudo bash -c "${BEFORE_APT_GET_UPDATE}; rm -rf '${TRAVIS_ROOT}/var/lib/apt/lists/'* && exec apt-get update -yq"
       - |-
         tool/travis_retry.sh sudo -E apt-get $travis_apt_get_options install \
           gcc-8 \
@@ -353,7 +353,8 @@ env:
     language: ruby
     rvm: 1.9.3
     env:
-      - APT_GET_UPDATE_OPTIONS="--allow-unauthenticated"
+      # for `apt-get update` error on trusty
+      - BEFORE_APT_GET_UPDATE="apt-get install debian-keyring debian-archive-keyring"
 
   - &x86_64-darwin18
     name: x86_64-darwin18
-- 
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