Comment 5 for bug 1815494

Verified with unattended-upgrades/1.1ubuntu1.18.04.9 on Bionic:

https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-bionic/bionic/amd64/u/unattended-upgrades/20190221_190835_4cafb@/log.gz :

...

Running ./test_remove_unused.py with python3
Initial blacklisted packages:
Initial whitelisted packages:
Starting unattended upgrades script
Allowed origins are: o=Ubuntu,a=lucid-security
APT::VersionedKernelPackages is not set
Checking: test-package ([<Origin component:'main' archive:'lucid-security' origin:'Ubuntu' label:'Ubuntu' site:'archive.ubuntu.com' isTrusted:True>])
pkgs that look like they should be upgraded: test-package

Fetched 0 B in 0s (0 B/s)
fetch.run() result: 0
<apt_pkg.AcquireItem object:Status: 2 Complete: 1 Local: 1 IsTrusted: 1 FileSize: 624 DestFile:'/tmp/autopkgtest.SPDe54/build.D9P/src/test/root.unused-deps/var/cache/apt/archives/test-package_2.0_all.deb' DescURI: 'http://archive.ubuntu.com/ubuntu/test-package_2.0_all.deb' ID:0 ErrorText: ''>
check_conffile_prompt(/tmp/autopkgtest.SPDe54/build.D9P/src/test/root.unused-deps/var/cache/apt/archives/test-package_2.0_all.deb)
found pkg: test-package
blacklist: []
whitelist: []
Packages that will be upgraded: test-package
Writing dpkg log to ./root.unused-deps/var/log/unattended-upgrades/unattended-upgrades-dpkg.log
applying set ['test-package']
left to upgrade set()
All upgrades installed
marking old-unused-dependency for removal
marking test-package-dependency for removal
marking linux-image-4.05.0-1021-kvm for removal
marking any-old-unused-modules for removal
Packages that were successfully auto-removed: any-old-unused-modules linux-image-4.05.0-1021-kvm old-unused-dependency test-package-dependency
Packages that are kept back:
InstCount=0 DelCount=0 BrokenCount=0
Extracting content from ./root.unused-deps/var/log/unattended-upgrades/unattended-upgrades-dpkg.log since 2019-02-21 18:01:34
/tmp/autopkgtest.SPDe54/build.D9P/src/test/unattended_upgrade.py:1129: ResourceWarning: unclosed file <_io.TextIOWrapper name=13 mode='w' encoding='UTF-8'>
  options.verbose or options.debug)
/tmp/autopkgtest.SPDe54/build.D9P/src/test/unattended_upgrade.py:1129: ResourceWarning: unclosed file <_io.TextIOWrapper name=12 mode='r' encoding='UTF-8'>
  options.verbose or options.debug)
/tmp/autopkgtest.SPDe54/build.D9P/src/test/unattended_upgrade.py:1474: ResourceWarning: unclosed file <_io.TextIOWrapper name=10 mode='w' encoding='UTF-8'>
  res, error = cache_commit(cache, logfile_dpkg, verbose)
/tmp/autopkgtest.SPDe54/build.D9P/src/test/unattended_upgrade.py:1474: ResourceWarning: unclosed file <_io.TextIOWrapper name=9 mode='r' encoding='UTF-8'>
  res, error = cache_commit(cache, logfile_dpkg, verbose)
.Initial blacklisted packages:
Initial whitelisted packages:
Starting unattended upgrades script
Allowed origins are: o=Ubuntu,a=lucid-security
Using (^linux-image-[0-9]+\.[0-9\.]+-.*|^.*-modules-[0-9]+\.[0-9\.]+-.*|^linux-headers-[0-9]+\.[0-9\.]+-.*) regexp to find kernel packages
Using (^linux-image-4\.15\.0\-45\-generic$|^.*-modules-4\.15\.0\-45\-generic$|^linux-headers-4\.15\.0\-45\-generic$) regexp to find running kernel packages
Checking: test-package ([<Origin component:'main' archive:'lucid-security' origin:'Ubuntu' label:'Ubuntu' site:'archive.ubuntu.com' isTrusted:True>])
pkgs that look like they should be upgraded: test-package

Fetched 0 B in 0s (0 B/s)
fetch.run() result: 0
<apt_pkg.AcquireItem object:Status: 2 Complete: 1 Local: 1 IsTrusted: 1 FileSize: 624 DestFile:'/tmp/autopkgtest.SPDe54/build.D9P/src/test/root.unused-deps/var/cache/apt/archives/test-package_2.0_all.deb' DescURI: 'http://archive.ubuntu.com/ubuntu/test-package_2.0_all.deb' ID:0 ErrorText: ''>
check_conffile_prompt(/tmp/autopkgtest.SPDe54/build.D9P/src/test/root.unused-deps/var/cache/apt/archives/test-package_2.0_all.deb)
found pkg: test-package
blacklist: []
whitelist: []
Removing unused kernel packages: linux-image-4.05.0-1021-kvm
marking linux-image-4.05.0-1021-kvm for removal
Keeping auto-removable linux-image-4.05.0-1021-kvm package(s) because it would also remove the following packages which should be kept in this step: test-package
Packages that were successfully auto-removed:
Packages that are kept back: linux-image-4.05.0-1021-kvm
Packages that will be upgraded: test-package
Writing dpkg log to ./root.unused-deps/var/log/unattended-upgrades/unattended-upgrades-dpkg.log
applying set ['test-package']
left to upgrade set()
All upgrades installed
marking test-package-dependency for removal
Packages that were successfully auto-removed: test-package-dependency
Packages that are kept back:
InstCount=0 DelCount=0 BrokenCount=0
Extracting content from ./root.unused-deps/var/log/unattended-upgrades/unattended-upgrades-dpkg.log since 2019-02-21 18:01:35
/tmp/autopkgtest.SPDe54/build.D9P/src/test/unattended_upgrade.py:1129: ResourceWarning: unclosed file <_io.TextIOWrapper name=16 mode='w' encoding='UTF-8'>
  options.verbose or options.debug)
/tmp/autopkgtest.SPDe54/build.D9P/src/test/unattended_upgrade.py:1129: ResourceWarning: unclosed file <_io.TextIOWrapper name=15 mode='r' encoding='UTF-8'>
  options.verbose or options.debug)
/tmp/autopkgtest.SPDe54/build.D9P/src/test/unattended_upgrade.py:1474: ResourceWarning: unclosed file <_io.TextIOWrapper name=16 mode='w' encoding='UTF-8'>
  res, error = cache_commit(cache, logfile_dpkg, verbose)
/tmp/autopkgtest.SPDe54/build.D9P/src/test/unattended_upgrade.py:1474: ResourceWarning: unclosed file <_io.TextIOWrapper name=15 mode='r' encoding='UTF-8'>
  res, error = cache_commit(cache, logfile_dpkg, verbose)
.
----------------------------------------------------------------------
Ran 2 tests in 1.320s
...