This is not an official Ubuntu package (even though it is, but in a future release)

[themusicgod1]

Ubuntu: artful 17.10
apport:
  Installed: 2.20.7-0ubuntu3.7
  Candidate: 2.20.7-0ubuntu3.7
  Version table:
 *** 2.20.7-0ubuntu3.7 500
        500 https://gpl.savoirfairelinux.net/pub/mirrors/ubuntu artful-updates/main amd64 Packages
        500 https://gpl.savoirfairelinux.net/pub/mirrors/ubuntu artful-updates/main i386 Packages
        500 https://mirror.its.sfu.ca/mirror/ubuntu artful-updates/main amd64 Packages
        500 https://mirror.its.sfu.ca/mirror/ubuntu artful-updates/main i386 Packages
        500 http://security.ubuntu.com/ubuntu artful-security/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu artful-security/main i386 Packages
        100 /var/lib/dpkg/status
     2.20.7-0ubuntu3 500
        500 https://gpl.savoirfairelinux.net/pub/mirrors/ubuntu artful/main amd64 Packages
        500 https://gpl.savoirfairelinux.net/pub/mirrors/ubuntu artful/main i386 Packages
        500 https://mirror.its.sfu.ca/mirror/ubuntu artful/main amd64 Packages
        500 https://mirror.its.sfu.ca/mirror/ubuntu artful/main i386 Packages
torbrowser-launcher:
  Installed: 0.2.9-1
  Candidate: 0.2.9-1
  Version table:
 *** 0.2.9-1 100
        100 /var/lib/dpkg/status
     0.2.7-3 500
        500 https://gpl.savoirfairelinux.net/pub/mirrors/ubuntu artful/universe amd64 Packages
        500 https://mirror.its.sfu.ca/mirror/ubuntu artful/universe amd64 Packages

on a ubuntu artful machine:

1) install torbrowser-launcher from bionic(even though you are running artful)*

2) ubuntu-bug torbrowser-launcher

result: ubuntu-bug refuses to send a bug report, claiming that it's a non-ubuntu, third party package

full error message:
"The problem cannot be reported:

This is not an official Ubuntu package. Please remove any third
party package and try again"

This is not strictly speaking true. While it's a bionic version, not an artful version - it is a ubuntu version.

expected behavior:

* Failing to report the bug is more or less fine - but if it fails, it should fail with an acknowledgement that the user is trying to report a bug against a future version.

or

* ubuntu-bug should allow the report of bugs with a 'future' version, so that people like myself who are testing bionic packages even in an unsupported setup can feed bug reports about those packages before they hit the mainstream ubuntu user. That would make this bug probably a duplicate of other bugs like https://bugs.launchpad.net/ubuntu/+source/apport/+bug/443961
if so.

*this is the suggested workaround for the complete nonfunctional version in artful.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: apport 2.20.7-0ubuntu3.7
ProcVersionSignature: Ubuntu 4.13.0-36.40-generic 4.13.13
Uname: Linux 4.13.0-36-generic x86_64
ApportLog: Error: [Errno 13] Permission denied: '/var/log/apport.log'
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Mar 8 11:37:20 2018
InstallationDate: Installed on 2017-04-18 (323 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
JournalErrors:
 Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system.
       Users in the 'systemd-journal' group can see all messages. Pass -q to
       turn off this notice.
 No journal files were opened due to insufficient permissions.
PackageArchitecture: all
SourcePackage: apport
UpgradeStatus: Upgraded to artful on 2017-10-19 (139 days ago)