After 'umt download flashplugin-nonfree ; cd flashplugin-nonfree' see the following:
$ find . | grep flashplugin-downloader
./precise/flashplugin-nonfree-11.2.202.644ubuntu0.12.04.1/debian/flashplugin-downloader
./precise/flashplugin-nonfree-11.2.202.644ubuntu0.12.04.1/debian/flashplugin-downloader/usr
./precise/flashplugin-nonfree-11.2.202.644ubuntu0.12.04.1/debian/flashplugin-downloader/usr/share
./precise/flashplugin-nonfree-11.2.202.644ubuntu0.12.04.1/debian/flashplugin-downloader/usr/share/doc
./precise/flashplugin-nonfree-11.2.202.644ubuntu0.12.04.1/debian/flashplugin-downloader/usr/share/doc/flashplugin-downloader
./precise/flashplugin-nonfree-11.2.202.644ubuntu0.12.04.1/debian/flashplugin-downloader/usr/share/doc/flashplugin-downloader/copyright
./precise/flashplugin-nonfree-11.2.202.644ubuntu0.12.04.1/debian/flashplugin-downloader/usr/share/doc/flashplugin-downloader/changelog.gz
./precise/flashplugin-nonfree-11.2.202.644ubuntu0.12.04.1/debian/flashplugin-downloader/DEBIAN
./precise/flashplugin-nonfree-11.2.202.644ubuntu0.12.04.1/debian/flashplugin-downloader/DEBIAN/control
./precise/flashplugin-nonfree-11.2.202.644ubuntu0.12.04.1/debian/flashplugin-downloader/DEBIAN/md5sums
./precise/flashplugin-nonfree-11.2.202.644ubuntu0.12.04.1/debian/flashplugin-downloader.links
./precise/flashplugin-nonfree-11.2.202.644ubuntu0.12.04.1/debian/flashplugin-downloader.substvars
./yakkety/flashplugin-nonfree-11.2.202.644ubuntu0.16.10.1/debian/flashplugin-downloader
./yakkety/flashplugin-nonfree-11.2.202.644ubuntu0.16.10.1/debian/flashplugin-downloader/usr
./yakkety/flashplugin-nonfree-11.2.202.644ubuntu0.16.10.1/debian/flashplugin-downloader/usr/share
./yakkety/flashplugin-nonfree-11.2.202.644ubuntu0.16.10.1/debian/flashplugin-downloader/usr/share/doc
./yakkety/flashplugin-nonfree-11.2.202.644ubuntu0.16.10.1/debian/flashplugin-downloader/usr/share/doc/flashplugin-downloader
./yakkety/flashplugin-nonfree-11.2.202.644ubuntu0.16.10.1/debian/flashplugin-downloader/usr/share/doc/flashplugin-downloader/copyright
./yakkety/flashplugin-nonfree-11.2.202.644ubuntu0.16.10.1/debian/flashplugin-downloader/usr/share/doc/flashplugin-downloader/changelog.gz
./yakkety/flashplugin-nonfree-11.2.202.644ubuntu0.16.10.1/debian/flashplugin-downloader/DEBIAN
./yakkety/flashplugin-nonfree-11.2.202.644ubuntu0.16.10.1/debian/flashplugin-downloader/DEBIAN/control
./yakkety/flashplugin-nonfree-11.2.202.644ubuntu0.16.10.1/debian/flashplugin-downloader/DEBIAN/md5sums
./yakkety/flashplugin-nonfree-11.2.202.644ubuntu0.16.10.1/debian/flashplugin-downloader.links
./yakkety/flashplugin-nonfree-11.2.202.644ubuntu0.16.10.1/debian/flashplugin-downloader.substvars
./zesty/flashplugin-nonfree-11.2.202.644ubuntu1/debian/flashplugin-downloader
./zesty/flashplugin-nonfree-11.2.202.644ubuntu1/debian/flashplugin-downloader/usr
./zesty/flashplugin-nonfree-11.2.202.644ubuntu1/debian/flashplugin-downloader/usr/share
./zesty/flashplugin-nonfree-11.2.202.644ubuntu1/debian/flashplugin-downloader/usr/share/doc
./zesty/flashplugin-nonfree-11.2.202.644ubuntu1/debian/flashplugin-downloader/usr/share/doc/flashplugin-downloader
./zesty/flashplugin-nonfree-11.2.202.644ubuntu1/debian/flashplugin-downloader/usr/share/doc/flashplugin-downloader/copyright
./zesty/flashplugin-nonfree-11.2.202.644ubuntu1/debian/flashplugin-downloader/usr/share/doc/flashplugin-downloader/changelog.gz
./zesty/flashplugin-nonfree-11.2.202.644ubuntu1/debian/flashplugin-downloader/DEBIAN
./zesty/flashplugin-nonfree-11.2.202.644ubuntu1/debian/flashplugin-downloader/DEBIAN/control
./zesty/flashplugin-nonfree-11.2.202.644ubuntu1/debian/flashplugin-downloader/DEBIAN/md5sums
./zesty/flashplugin-nonfree-11.2.202.644ubuntu1/debian/flashplugin-downloader.links
./zesty/flashplugin-nonfree-11.2.202.644ubuntu1/debian/flashplugin-downloader.substvars
./xenial/flashplugin-nonfree-11.2.202.644ubuntu0.16.04.1/debian/flashplugin-downloader
./xenial/flashplugin-nonfree-11.2.202.644ubuntu0.16.04.1/debian/flashplugin-downloader/usr
./xenial/flashplugin-nonfree-11.2.202.644ubuntu0.16.04.1/debian/flashplugin-downloader/usr/share
./xenial/flashplugin-nonfree-11.2.202.644ubuntu0.16.04.1/debian/flashplugin-downloader/usr/share/doc
./xenial/flashplugin-nonfree-11.2.202.644ubuntu0.16.04.1/debian/flashplugin-downloader/usr/share/doc/flashplugin-downloader
./xenial/flashplugin-nonfree-11.2.202.644ubuntu0.16.04.1/debian/flashplugin-downloader/usr/share/doc/flashplugin-downloader/copyright
./xenial/flashplugin-nonfree-11.2.202.644ubuntu0.16.04.1/debian/flashplugin-downloader/usr/share/doc/flashplugin-downloader/changelog.gz
./xenial/flashplugin-nonfree-11.2.202.644ubuntu0.16.04.1/debian/flashplugin-downloader/DEBIAN
./xenial/flashplugin-nonfree-11.2.202.644ubuntu0.16.04.1/debian/flashplugin-downloader/DEBIAN/control
./xenial/flashplugin-nonfree-11.2.202.644ubuntu0.16.04.1/debian/flashplugin-downloader/DEBIAN/md5sums
./xenial/flashplugin-nonfree-11.2.202.644ubuntu0.16.04.1/debian/flashplugin-downloader.links
./xenial/flashplugin-nonfree-11.2.202.644ubuntu0.16.04.1/debian/flashplugin-downloader.substvars
./trusty/flashplugin-nonfree-11.2.202.644ubuntu0.14.04.1/debian/flashplugin-downloader
./trusty/flashplugin-nonfree-11.2.202.644ubuntu0.14.04.1/debian/flashplugin-downloader/usr
./trusty/flashplugin-nonfree-11.2.202.644ubuntu0.14.04.1/debian/flashplugin-downloader/usr/share
./trusty/flashplugin-nonfree-11.2.202.644ubuntu0.14.04.1/debian/flashplugin-downloader/usr/share/doc
./trusty/flashplugin-nonfree-11.2.202.644ubuntu0.14.04.1/debian/flashplugin-downloader/usr/share/doc/flashplugin-downloader
./trusty/flashplugin-nonfree-11.2.202.644ubuntu0.14.04.1/debian/flashplugin-downloader/usr/share/doc/flashplugin-downloader/copyright
./trusty/flashplugin-nonfree-11.2.202.644ubuntu0.14.04.1/debian/flashplugin-downloader/usr/share/doc/flashplugin-downloader/changelog.gz
./trusty/flashplugin-nonfree-11.2.202.644ubuntu0.14.04.1/debian/flashplugin-downloader/DEBIAN
./trusty/flashplugin-nonfree-11.2.202.644ubuntu0.14.04.1/debian/flashplugin-downloader/DEBIAN/control
./trusty/flashplugin-nonfree-11.2.202.644ubuntu0.14.04.1/debian/flashplugin-downloader/DEBIAN/md5sums
./trusty/flashplugin-nonfree-11.2.202.644ubuntu0.14.04.1/debian/flashplugin-downloader.links
./trusty/flashplugin-nonfree-11.2.202.644ubuntu0.14.04.1/debian/flashplugin-downloader.substvars
This looks like an ar x and/or dpkg-src -x of flashplugin-downloader package by accident.
Thanks
