apt-get update warning：忽略为程序包提供DepCompareOp行…
这有一个赏金，它没有被授予，因为没有好的答案…☹
我尝试运行apt-get update并得到以下警告：
W: Ignoring Provides line with DepCompareOp for package python-cffi-backend-api-max W: Ignoring Provides line with DepCompareOp for package python-cffi-backend-api-min W: Ignoring Provides line with DepCompareOp for package python3-cffi-backend-api-max W: Ignoring Provides line with DepCompareOp for package python3-cffi-backend-api-min W: You may want to run apt-get update to correct these problems
按照指示，我再次尝试了apt-get update并得到了相同的警告。
我该怎么做才能解决这些问题？
完整输出如下：
; sudo apt-get update Hit http://security.ubuntu.com trusty-security InRelease Hit http://security.ubuntu.com trusty-security/main Sources Hit http://security.ubuntu.com trusty-security/restricted Sources Hit http://security.ubuntu.com trusty-security/universe Sources Hit http://security.ubuntu.com trusty-security/multiverse Sources Hit http://security.ubuntu.com trusty-security/main amd64 Packages Hit http://security.ubuntu.com trusty-security/restricted amd64 Packages Hit http://security.ubuntu.com trusty-security/universe amd64 Packages Hit http://security.ubuntu.com trusty-security/multiverse amd64 Packages Hit http://security.ubuntu.com trusty-security/main i386 Packages Hit http://security.ubuntu.com trusty-security/restricted i386 Packages Hit http://security.ubuntu.com trusty-security/universe i386 Packages Hit http://security.ubuntu.com trusty-security/multiverse i386 Packages Hit http://security.ubuntu.com trusty-security/main Translation-en Hit http://security.ubuntu.com trusty-security/multiverse Translation-en Hit http://security.ubuntu.com trusty-security/restricted Translation-en Hit http://security.ubuntu.com trusty-security/universe Translation-en Ign http://us.archive.ubuntu.com trusty InRelease Hit http://us.archive.ubuntu.com trusty-updates InRelease Hit http://us.archive.ubuntu.com trusty-backports InRelease Hit http://us.archive.ubuntu.com trusty Release.gpg Hit http://us.archive.ubuntu.com trusty-updates/main Sources Hit http://us.archive.ubuntu.com trusty-updates/restricted Sources Hit http://us.archive.ubuntu.com trusty-updates/universe Sources Hit http://us.archive.ubuntu.com trusty-updates/multiverse Sources Hit http://us.archive.ubuntu.com trusty-updates/main amd64 Packages Hit http://us.archive.ubuntu.com trusty-updates/restricted amd64 Packages Hit http://us.archive.ubuntu.com trusty-updates/universe amd64 Packages Hit http://us.archive.ubuntu.com trusty-updates/multiverse amd64 Packages Hit http://us.archive.ubuntu.com trusty-updates/main i386 Packages Hit http://us.archive.ubuntu.com trusty-updates/restricted i386 Packages Hit http://us.archive.ubuntu.com trusty-updates/universe i386 Packages Hit http://us.archive.ubuntu.com trusty-updates/multiverse i386 Packages Hit http://us.archive.ubuntu.com trusty-updates/main Translation-en Hit http://us.archive.ubuntu.com trusty-updates/multiverse Translation-en Hit http://us.archive.ubuntu.com trusty-updates/restricted Translation-en Hit http://us.archive.ubuntu.com trusty-updates/universe Translation-en Hit http://us.archive.ubuntu.com trusty-backports/main Sources Hit http://us.archive.ubuntu.com trusty-backports/restricted Sources Hit http://us.archive.ubuntu.com trusty-backports/universe Sources Hit http://us.archive.ubuntu.com trusty-backports/multiverse Sources Hit http://us.archive.ubuntu.com trusty-backports/main amd64 Packages Hit http://us.archive.ubuntu.com trusty-backports/restricted amd64 Packages Hit http://us.archive.ubuntu.com trusty-backports/universe amd64 Packages Hit http://us.archive.ubuntu.com trusty-backports/multiverse amd64 Packages Hit http://us.archive.ubuntu.com trusty-backports/main i386 Packages Hit http://us.archive.ubuntu.com trusty-backports/restricted i386 Packages Hit http://us.archive.ubuntu.com trusty-backports/universe i386 Packages Hit http://us.archive.ubuntu.com trusty-backports/multiverse i386 Packages Hit http://us.archive.ubuntu.com trusty-backports/main Translation-en Hit http://us.archive.ubuntu.com trusty-backports/multiverse Translation-en Hit http://us.archive.ubuntu.com trusty-backports/restricted Translation-en Hit http://us.archive.ubuntu.com trusty-backports/universe Translation-en Hit http://us.archive.ubuntu.com trusty Release Hit http://us.archive.ubuntu.com trusty/main Sources Hit http://us.archive.ubuntu.com trusty/restricted Sources Hit http://us.archive.ubuntu.com trusty/universe Sources Hit http://us.archive.ubuntu.com trusty/multiverse Sources Hit http://us.archive.ubuntu.com trusty/main amd64 Packages Hit http://us.archive.ubuntu.com trusty/restricted amd64 Packages Hit http://us.archive.ubuntu.com trusty/universe amd64 Packages Hit http://us.archive.ubuntu.com trusty/multiverse amd64 Packages Hit http://us.archive.ubuntu.com trusty/main i386 Packages Hit http://us.archive.ubuntu.com trusty/restricted i386 Packages Hit http://us.archive.ubuntu.com trusty/universe i386 Packages Hit http://us.archive.ubuntu.com trusty/multiverse i386 Packages Hit http://us.archive.ubuntu.com trusty/main Translation-en_GB Hit http://us.archive.ubuntu.com trusty/main Translation-en Hit http://us.archive.ubuntu.com trusty/multiverse Translation-en_GB Hit http://us.archive.ubuntu.com trusty/multiverse Translation-en Hit http://us.archive.ubuntu.com trusty/restricted Translation-en_GB Hit http://us.archive.ubuntu.com trusty/restricted Translation-en Hit http://us.archive.ubuntu.com trusty/universe Translation-en_GB Hit http://us.archive.ubuntu.com trusty/universe Translation-en Ign http://us.archive.ubuntu.com trusty/main Translation-en_GB.UTF-8 Ign http://us.archive.ubuntu.com trusty/multiverse Translation-en_GB.UTF-8 Ign http://us.archive.ubuntu.com trusty/restricted Translation-en_GB.UTF-8 Ign http://us.archive.ubuntu.com trusty/universe Translation-en_GB.UTF-8 Ignoring Provides line with DepCompareOp for package python-cffi-backend-api-max Ignoring Provides line with DepCompareOp for package python-cffi-backend-api-min Ignoring Provides line with DepCompareOp for package python3-cffi-backend-api-max Ignoring Provides line with DepCompareOp for package python3-cffi-backend-api-min You may want to run apt-get update to correct these problems Reading package lists... Done W: Ignoring Provides line with DepCompareOp for package python-cffi-backend-api-max W: Ignoring Provides line with DepCompareOp for package python-cffi-backend-api-min W: Ignoring Provides line with DepCompareOp for package python3-cffi-backend-api-max W: Ignoring Provides line with DepCompareOp for package python3-cffi-backend-api-min W: You may want to run apt-get update to correct these problems
我删除了所有外部PPA，但仍然收到此错误： 因此这不是从14.04升级到16.04成功的重复，但它实际上失败了吗？
根据评论进行更多调试：
; apt-cache policy Package files: 100 /var/lib/dpkg/status release a=now 500 http://apt.postgresql.org/pub/repos/apt/ precise-pgdg/main i386 Packages release o=apt.postgresql.org,a=precise-pgdg,n=precise-pgdg,l=PostgreSQL for Debian/Ubuntu repository,c=main origin apt.postgresql.org 500 http://apt.postgresql.org/pub/repos/apt/ precise-pgdg/main amd64 Packages release o=apt.postgresql.org,a=precise-pgdg,n=precise-pgdg,l=PostgreSQL for Debian/Ubuntu repository,c=main origin apt.postgresql.org 500 https://deb.nodesource.com/node_6.x/ trusty/main i386 Packages release o=Node Source,n=trusty,l=Node Source,c=main origin deb.nodesource.com 500 https://deb.nodesource.com/node_6.x/ trusty/main amd64 Packages release o=Node Source,n=trusty,l=Node Source,c=main origin deb.nodesource.com 500 http://ppa.launchpad.net/neovim-ppa/unstable/ubuntu/ trusty/main Translation-en 500 http://ppa.launchpad.net/neovim-ppa/unstable/ubuntu/ trusty/main i386 Packages release v=14.04,o=LP-PPA-neovim-ppa-unstable,a=trusty,n=trusty,l=Neovim Unstable,c=main origin ppa.launchpad.net 500 http://ppa.launchpad.net/neovim-ppa/unstable/ubuntu/ trusty/main amd64 Packages release v=14.04,o=LP-PPA-neovim-ppa-unstable,a=trusty,n=trusty,l=Neovim Unstable,c=main origin ppa.launchpad.net 500 http://llvm.org/apt/trusty/ llvm-toolchain-trusty-3.6/main i386 Packages release n=llvm-toolchain-trusty-3.6,c=main origin llvm.org 500 http://llvm.org/apt/trusty/ llvm-toolchain-trusty-3.6/main amd64 Packages release n=llvm-toolchain-trusty-3.6,c=main origin llvm.org 500 http://llvm.org/apt/trusty/ llvm-toolchain-trusty-3.5/main i386 Packages release n=llvm-toolchain-trusty-3.5,c=main origin llvm.org 500 http://llvm.org/apt/trusty/ llvm-toolchain-trusty-3.5/main amd64 Packages release n=llvm-toolchain-trusty-3.5,c=main origin llvm.org 500 http://llvm.org/apt/trusty/ llvm-toolchain-trusty/main i386 Packages release n=llvm-toolchain-trusty,c=main origin llvm.org 500 http://llvm.org/apt/trusty/ llvm-toolchain-trusty/main amd64 Packages release n=llvm-toolchain-trusty,c=main origin llvm.org 500 http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu/ precise/main Translation-en 500 http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu/ precise/main i386 Packages release v=12.04,o=LP-PPA-ubuntu-toolchain-r-test,a=precise,n=precise,l=Toolchain test builds,c=main origin ppa.launchpad.net 500 http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu/ precise/main amd64 Packages release v=12.04,o=LP-PPA-ubuntu-toolchain-r-test,a=precise,n=precise,l=Toolchain test builds,c=main origin ppa.launchpad.net 500 http://ppa.launchpad.net/certbot/certbot/ubuntu/ trusty/main Translation-en 500 http://ppa.launchpad.net/certbot/certbot/ubuntu/ trusty/main i386 Packages release v=14.04,o=LP-PPA-certbot-certbot,a=trusty,n=trusty,l=Certbot PPA,c=main origin ppa.launchpad.net 500 http://ppa.launchpad.net/certbot/certbot/ubuntu/ trusty/main amd64 Packages release v=14.04,o=LP-PPA-certbot-certbot,a=trusty,n=trusty,l=Certbot PPA,c=main origin ppa.launchpad.net 500 http://security.ubuntu.com/ubuntu/ trusty-security/universe Translation-en 500 http://security.ubuntu.com/ubuntu/ trusty-security/restricted Translation-en 500 http://security.ubuntu.com/ubuntu/ trusty-security/multiverse Translation-en 500 http://security.ubuntu.com/ubuntu/ trusty-security/main Translation-en 500 http://security.ubuntu.com/ubuntu/ trusty-security/multiverse i386 Packages release v=14.04,o=Ubuntu,a=trusty-security,n=trusty,l=Ubuntu,c=multiverse origin security.ubuntu.com 500 http://security.ubuntu.com/ubuntu/ trusty-security/universe i386 Packages release v=14.04,o=Ubuntu,a=trusty-security,n=trusty,l=Ubuntu,c=universe origin security.ubuntu.com 500 http://security.ubuntu.com/ubuntu/ trusty-security/restricted i386 Packages release v=14.04,o=Ubuntu,a=trusty-security,n=trusty,l=Ubuntu,c=restricted origin security.ubuntu.com 500 http://security.ubuntu.com/ubuntu/ trusty-security/main i386 Packages release v=14.04,o=Ubuntu,a=trusty-security,n=trusty,l=Ubuntu,c=main origin security.ubuntu.com 500 http://security.ubuntu.com/ubuntu/ trusty-security/multiverse amd64 Packages release v=14.04,o=Ubuntu,a=trusty-security,n=trusty,l=Ubuntu,c=multiverse origin security.ubuntu.com 500 http://security.ubuntu.com/ubuntu/ trusty-security/universe amd64 Packages release v=14.04,o=Ubuntu,a=trusty-security,n=trusty,l=Ubuntu,c=universe origin security.ubuntu.com 500 http://security.ubuntu.com/ubuntu/ trusty-security/restricted amd64 Packages release v=14.04,o=Ubuntu,a=trusty-security,n=trusty,l=Ubuntu,c=restricted origin security.ubuntu.com 500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages release v=14.04,o=Ubuntu,a=trusty-security,n=trusty,l=Ubuntu,c=main origin security.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty-backports/universe Translation-en 500 http://us.archive.ubuntu.com/ubuntu/ trusty-backports/restricted Translation-en 500 http://us.archive.ubuntu.com/ubuntu/ trusty-backports/multiverse Translation-en 500 http://us.archive.ubuntu.com/ubuntu/ trusty-backports/main Translation-en 100 http://us.archive.ubuntu.com/ubuntu/ trusty-backports/multiverse i386 Packages release v=14.04,o=Ubuntu,a=trusty-backports,n=trusty,l=Ubuntu,c=multiverse origin us.archive.ubuntu.com 100 http://us.archive.ubuntu.com/ubuntu/ trusty-backports/universe i386 Packages release v=14.04,o=Ubuntu,a=trusty-backports,n=trusty,l=Ubuntu,c=universe origin us.archive.ubuntu.com 100 http://us.archive.ubuntu.com/ubuntu/ trusty-backports/restricted i386 Packages release v=14.04,o=Ubuntu,a=trusty-backports,n=trusty,l=Ubuntu,c=restricted origin us.archive.ubuntu.com 100 http://us.archive.ubuntu.com/ubuntu/ trusty-backports/main i386 Packages release v=14.04,o=Ubuntu,a=trusty-backports,n=trusty,l=Ubuntu,c=main origin us.archive.ubuntu.com 100 http://us.archive.ubuntu.com/ubuntu/ trusty-backports/multiverse amd64 Packages release v=14.04,o=Ubuntu,a=trusty-backports,n=trusty,l=Ubuntu,c=multiverse origin us.archive.ubuntu.com 100 http://us.archive.ubuntu.com/ubuntu/ trusty-backports/universe amd64 Packages release v=14.04,o=Ubuntu,a=trusty-backports,n=trusty,l=Ubuntu,c=universe origin us.archive.ubuntu.com 100 http://us.archive.ubuntu.com/ubuntu/ trusty-backports/restricted amd64 Packages release v=14.04,o=Ubuntu,a=trusty-backports,n=trusty,l=Ubuntu,c=restricted origin us.archive.ubuntu.com 100 http://us.archive.ubuntu.com/ubuntu/ trusty-backports/main amd64 Packages release v=14.04,o=Ubuntu,a=trusty-backports,n=trusty,l=Ubuntu,c=main origin us.archive.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/universe Translation-en 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/restricted Translation-en 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/multiverse Translation-en 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main Translation-en 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/multiverse i386 Packages release v=14.04,o=Ubuntu,a=trusty-updates,n=trusty,l=Ubuntu,c=multiverse origin us.archive.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/universe i386 Packages release v=14.04,o=Ubuntu,a=trusty-updates,n=trusty,l=Ubuntu,c=universe origin us.archive.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/restricted i386 Packages release v=14.04,o=Ubuntu,a=trusty-updates,n=trusty,l=Ubuntu,c=restricted origin us.archive.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main i386 Packages release v=14.04,o=Ubuntu,a=trusty-updates,n=trusty,l=Ubuntu,c=main origin us.archive.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/multiverse amd64 Packages release v=14.04,o=Ubuntu,a=trusty-updates,n=trusty,l=Ubuntu,c=multiverse origin us.archive.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/universe amd64 Packages release v=14.04,o=Ubuntu,a=trusty-updates,n=trusty,l=Ubuntu,c=universe origin us.archive.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/restricted amd64 Packages release v=14.04,o=Ubuntu,a=trusty-updates,n=trusty,l=Ubuntu,c=restricted origin us.archive.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages release v=14.04,o=Ubuntu,a=trusty-updates,n=trusty,l=Ubuntu,c=main origin us.archive.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe Translation-en_GB 500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe Translation-en 500 http://us.archive.ubuntu.com/ubuntu/ trusty/restricted Translation-en_GB 500 http://us.archive.ubuntu.com/ubuntu/ trusty/restricted Translation-en 500 http://us.archive.ubuntu.com/ubuntu/ trusty/multiverse Translation-en_GB 500 http://us.archive.ubuntu.com/ubuntu/ trusty/multiverse Translation-en 500 http://us.archive.ubuntu.com/ubuntu/ trusty/main Translation-en_GB 500 http://us.archive.ubuntu.com/ubuntu/ trusty/main Translation-en 500 http://us.archive.ubuntu.com/ubuntu/ trusty/multiverse i386 Packages release v=14.04,o=Ubuntu,a=trusty,n=trusty,l=Ubuntu,c=multiverse origin us.archive.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe i386 Packages release v=14.04,o=Ubuntu,a=trusty,n=trusty,l=Ubuntu,c=universe origin us.archive.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty/restricted i386 Packages release v=14.04,o=Ubuntu,a=trusty,n=trusty,l=Ubuntu,c=restricted origin us.archive.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty/main i386 Packages release v=14.04,o=Ubuntu,a=trusty,n=trusty,l=Ubuntu,c=main origin us.archive.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty/multiverse amd64 Packages release v=14.04,o=Ubuntu,a=trusty,n=trusty,l=Ubuntu,c=multiverse origin us.archive.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages release v=14.04,o=Ubuntu,a=trusty,n=trusty,l=Ubuntu,c=universe origin us.archive.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty/restricted amd64 Packages release v=14.04,o=Ubuntu,a=trusty,n=trusty,l=Ubuntu,c=restricted origin us.archive.ubuntu.com 500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages release v=14.04,o=Ubuntu,a=trusty,n=trusty,l=Ubuntu,c=main origin us.archive.ubuntu.com Pinned packages: ; apt libapt-pkg\* E: Invalid operation libapt-pkg*
虽然，我怀疑这可能更相关：
; apt-cache policy python-cffi-backend-api-max python-cffi-backend-api-min python-cffi-backend-api-max: Installed: (none) Candidate: (none) Version table: python-cffi-backend-api-min: Installed: (none) Candidate: (none) Version table:
出现此问题是因为您的apt版本“太旧”并且不支持使用版本化“提供：”的软件包。
您可以查看您的apt版本
apt --version
在apt 1.0.7中添加了“versioned provide”，但Ubuntu 14.04附带了apt 1.0.1。
有关更多信息，请参阅https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1662227 。
警告是无害的。 如果您确实要删除它，可以将apt从源代码编译为支持版本化提供的版本。
警告！：更新apt有潜在危险，可能会破坏软件包管理器。
如果您选择这样做，请按照下列步骤操作：
wget http://snapshot.debian.org/archive/debian/20150821T213547Z/pool/main/a/apt/apt_1.0.10.2.tar.xz tar -xvf apt_1.0.10.2.tar.xz cd apt-1.0.10.2 ./configure make
真正的解决方案似乎是追踪违规包并要求PPA维护者修复它。
由于问题是因为certbot发生的，我打开了问题6063来解决这个问题。 这条评论要求PPA的维护者解决问题。
从10月23日星期一开始，这已经解决了。 确保你这样做
sudo apt-get update sudo apt-get upgrade
要获得更改。