It appears that the file: '/usr/share/gocode/src/github.com/juju/loggo/formatter_test.go' Is provided by both 'golang-github-juju-loggo-dev' and 'golang-juju-loggo-dev' [1].
A simple test case is: lxc launch ubuntu-daily:zesty z lxc exec z bash apt update apt install golang-github-juju-loggo-dev golang-juju-loggo-dev To which you will get a message similar to: dpkg: error processing archive /tmp/apt-dpkg-install-qlSp4o/42-golang-github-juju-loggo-dev_0.0~git20150527.0.8477fc9-1_all.deb (--unpack): trying to overwrite '/usr/share/gocode/src/github.com/juju/loggo/package_test.go', which is also in package golang-juju-loggo-dev 0.0~git20150318-0ubuntu1 At the very least these packages should conflict with other another to prevent this error from occurring. [1] http://packages.ubuntu.com/search?suite=zesty&arch=any&searchon=contents&keywords=%2Fusr%2Fshare%2Fgocode%2Fsrc%2Fgithub.com%2Fjuju%2Floggo%2Fformatter_test.go ** Changed in: golang-juju-loggo (Ubuntu) Status: New => Confirmed ** Changed in: golang-juju-loggo (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1680442 Title: package golang-juju-loggo-dev (not installed) failed to install/upgrade: a(z) „/usr/share/gocode/src/github.com/juju/loggo/formatter_test.go” felülírási kísérlete, amely a(z) golang-github-juju-loggo-dev 0.0~git20150527.0.8477fc9-1 csomagban is szerepel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/golang-juju-loggo/+bug/1680442/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs