目前，每次尝试上传项目时，我都会收到此错误。刚刚初始化的 repo 大小只有 800kb，所以问题不是大小。当我推动它时，它会挂起几分钟。
Abot::artifacts $ git push heroku master
! Timed out preparing your repository for compilation.
! If this happens consistently please see
! https://devcenter.heroku.com/articles/slug-compiler#repo-size
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.