原本一直正常的travis-ci脚本突然报错了.

However the following packages replace it:
  fonts-droid-fallback
E: Package 'fonts-droid' has no installation candidate
apt-get.diagnostics
apt-get install failed
The command "sudo -E apt-get -yq --no-install-suggests --no-install-recommends $(travis_apt_get_options) install libstdc++6 fonts-droid" failed and exited with 100 during .
Your build has been stopped.

fonts-droid已经被移除了,我们只需要将fonts-droid替换为fonts-noto或者fonts-droid-fallback就可以了。