The package is of bad quality
The installation of a package which violates the quality standards isn't allowed. This could cause serious problems on your computer. Please contact the person or organisation who provided this package file and include the details beneath.
Lintian check results for /tmp/doomsday_2.0.0-build1628_amd64.deb:
E: doomsday: control-file-has-bad-permissions md5sums 0664 != 0644