This is a problem in the unity-scope-home source package, version 6.8.2+14.04.20131029.1-0ubuntu1 from Ubuntu 14.04 LTS.
According to Ubuntu policy, the "clean" rule in debian/rules "must undo any effects that the build and binary targets may have had, except that it should leave alone any output files created in the parent directory by a run of a binary target." That target in unity-scope-home does not do this:
root@chickatrice:/tmp# apt-get source unity-scope-home=6.8.2+14.04.20131029.1-0ubuntu1 >/dev/null 2>&1
root@chickatrice:/tmp# find unity-scope-home-6.8.2+14.04.20131029.1 > files.before
root@chickatrice:/tmp# ( cd unity-scope-home-6.8.2+14.04.20131029.1 && debian/rules build && debian/rules clean ) >/dev/null 2>&1
root@chickatrice:/tmp# find unity-scope-home-6.8.2+14.04.20131029.1 > files.after
root@chickatrice:/tmp# diff files.before files.after | grep '^>'
> unity-scope-home-6.8.2+14.04.20131029.1/tests/unit/feedback.dump
> unity-scope-home-6.8.2+14.04.20131029.1/tests/unit/search.dump
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/books.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/photos.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/more_suggestions.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/applications.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/news.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/info.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/code.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/help.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/calendar.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/recipes.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/files.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/searchin.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/boxes.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/notes.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/weather.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/web.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/reference.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/video.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/music.scope
> unity-scope-home-6.8.2+14.04.20131029.1/data/master-scopes/graphics.scope
It looks like some of the files generating while building are not correctly removed while cleaning. This is a problem if (as I do) you want to convert the package to use the "3.0 (quilt)" source format.
The attached patch seemed to fix the problem for me, but I now worry about the *.dump files above, which it doesn't touch.
The attachment "Crude patch that might fix the problem" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.
[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]