Error in building with travis CI

[mmjac10]

As you told me to, I build remy inside travis CI. It gives me errors on the command
sudo apt-get install -y --allow-unauthenticated libglfw3-dev as written in .travis.yml file. The main error is E: Sub-process /usr/bin/dpkg returned an error code. Here is a link to the log.
https://api.travis-ci.org/v3/job/357396501/log.txt
I googled the error and tried sudo apt-get upgrade, sudo apt-get clean but didn't get any useful results.
Thanks