每当我在Ubuntu 14.04.2中运行sudo apt-get update时，我都会在最后收到此消息。我只是忽略了它，但我担心因为它我没有得到所有的更新。我该如何解决这个问题？
W: Failed to fetch http://repo.mysql.com/apt/ubuntu/dists/trusty/InRelease Unable to find expected entry 'utilities-1.4/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file)