query: Trying to upgrade to 16.04 from 15.10, but "the required dependency 'apt (>= 1.0.10.2ubuntu2)' is not installed"?
positive_passages.docid: 728
positive_passages.text: Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?
negative_passages.docid: 80233
negative_passages.text: Upgrade to 20.04 from 19.10 isn't available
negative_passages.docid: 117852
negative_passages.text: "Package dependencies cannot be resolved" error when installing software
negative_passages.docid: 44209
negative_passages.text: Problem with update-manager: No module named 'apt_pkg' in Ubuntu 13.10, having installed Python 3.4 on /usr/local/lib
negative_passages.docid: 51350
negative_passages.text: While updating the ubuntu 16.04 does not have a Release file Error
negative_passages.docid: 2670
negative_passages.text: Why is "No new release found" when upgrading from a LTS to the next?
negative_passages.docid: 87236
negative_passages.text: How to upgrade Ubuntu 12.04 to 13.10?
negative_passages.docid: 3275
negative_passages.text: I can't seem to install Ubuntu 16.04.2
negative_passages.docid: 129101
negative_passages.text: Upgrading Ubuntu 9.04 to 9.10 when Update Manager doesn't let you
negative_passages.docid: 12614
negative_passages.text: Upgrade problem
negative_passages.docid: 77705
negative_passages.text: Unable to upgrade in ubuntu
negative_passages.docid: 110896
negative_passages.text: Package installation - Outdated repository
negative_passages.docid: 24165
negative_passages.text: Upgrade to version newer than repositories
negative_passages.docid: 60659
negative_passages.text: Install newer package version from trusty-backports
negative_passages.docid: 125352
negative_passages.text: How to install libboost_version1.59 or newer on Ubuntu16.04
negative_passages.docid: 16578
negative_passages.text: How to upgrade a single package using apt-get?
negative_passages.docid: 110148
negative_passages.text: Why does `do-release-upgrade` skip a version?