[Bug 1951988] Autopkgtest regression report (dpkg/1.19.7ubuntu3.1)

[Ubuntu SRU Bot]

All autopkgtests for the newly accepted dpkg (1.19.7ubuntu3.1) for focal have finished running.
The following regressions have been reported in tests triggered by the package:

pkg-perl-tools/0.59 (armhf)
nftables/0.9.3-2 (armhf)
perl/5.30.0-9ubuntu0.2 (armhf)
reprotest/0.7.14 (amd64)
pkg-components/0.13 (armhf)
python-sysv-ipc/1.0.0-2build1 (armhf)
dgit/9.10 (arm64, armhf)


Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-
migration/focal/update_excuses.html#dpkg

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

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https://bugs.launchpad.net/bugs/1951988

Title:
  dpkg-source should fail if maintainer is not ubuntu and DEBEMAIL
  contains @canonical.com

Status in dpkg package in Ubuntu:
  Fix Released
Status in dpkg source package in Focal:
  Fix Committed
Status in dpkg source package in Impish:
  Fix Committed
Status in dpkg package in Debian:
  New

Bug description:
  [Impact]
  dpkg-source will do a check for a scenario where the maintainer field in d/control does not contain "ubuntu" and the DEBEMAIL environment variable ends in @ubuntu.com. There are some Canonical employees that use an @canonical.com email address instead, so we should expand this check to also trigger on DEBEMAIL values that end in @canonical.com

  [Test Case]
  In a source package that doesn't have XSBC-Original-Maintainer set run
  1) DEBEMAIL=brian at canonical.com debuild -i -I -S -d

  With version of the dpkg in the release pocket you'll receive a
  warning, with the version of the package from -updates you'll instead
  receive an error.

  dpkg-source: error: Version number suggests Ubuntu changes, but Maintainer: does not have Ubuntu address
  dpkg-source: info: using options from sed-4.8/debian/source/options: --single-debian-patch --auto-commit
  dpkg-source: info: using source format '3.0 (quilt)'
  dpkg-buildpackage: error: dpkg-source -i.pc* -I.bzr -I.svn -ICVS -I.pc -i -I -b . subprocess returned exit status 2
  debuild: fatal error at line 1182:
  dpkg-buildpackage -us -uc -ui -i.pc* -I.bzr -I.svn -ICVS -I.pc -i -I -S -d failed

  [Other Info]
  Having every Ubuntu user update dpkg for a change that'll only benefit Ubuntu developers seems like a bit much. So instead we'll stage this in -proposed and in the event there is an SRU of dpkg or a security update we'll get this included.

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