[Piuparts-devel] Bug#1104230: piuparts: changes file is not readable on unshare build backend

[Dheeraj Reddy]

Package: piuparts
Version: 1.6.0
Severity: minor
X-Debbugs-Cc: dheerajre at proton.me

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
   * What was the outcome of this action?
   * What outcome did you expect instead?

*** End of the template - remove these template lines ***

-- What led up to the situatuon?
 -ran sbuild on rsync with piuparts in config file: 
    $piuparts_opts = ['--no-eatmydata', '--distribution=%r', '--fake-essential-packages=systemd-sysv'];
 - Piuparts ran failed after changes file became unreadable

-- Error Log of Piuparts:
   piuparts
--------

0m0.0s INFO: Running non-root. Reexecuting in a usernamespace.
0m0.0s INFO: ------------------------------------------------------------------------------
0m0.0s INFO: To quickly glance what went wrong, scroll down to the bottom of this logfile.
0m0.0s INFO: FAQ available at https://wiki.debian.org/piuparts/FAQ
0m0.0s INFO: The FAQ also explains how to contact us in case you think piuparts is wrong.
0m0.0s INFO: ------------------------------------------------------------------------------
0m0.0s INFO: piuparts version 1.6.0 starting up.
0m0.0s INFO: Command line arguments: /usr/bin/piuparts --no-eatmydata --distribution=unstable --fake-essential-packages=systemd-sysv /home/poseidon/pkgs/rsync_3.4.1+ds1-3_amd64.changes
0m0.0s INFO: Running on: Linux debian 6.12.19-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.19-1 (2025-03-16) x86_64
/usr/bin/piuparts:2375: DeprecationWarning: The 'warn' function is deprecated, use 'warning' instead
  logging.warn(changes_path + " is not readable. Skipping.")
0m0.0s WARNING: /home/poseidon/pkgs/rsync_3.4.1+ds1-3_amd64.changes is not readable. Skipping.

Piuparts caught exception, exiting...
------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/bin/piuparts", line 3749, in <module>
    main()
    ~~~~^^
  File "/usr/bin/piuparts", line 3734, in main
    process_packages(package_list)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
  File "/usr/bin/piuparts", line 3605, in process_packages
    packages = get_package_names_from_package_files(package_list)
  File "/usr/bin/piuparts", line 2344, in get_package_names_from_package_files
    for filename in package_files:
                    ^^^^^^^^^^^^^
TypeError: 'NoneType' object is not iterable
------------------------------------------------------------
0m0.0s ERROR: piuparts run ends.

E: Piuparts run failed.

---------------------------------------------------------------------------------------------------------

-- Outcome of the action:
    Even though there are no severe consequences and salsa-ci reports no
    such bug I thought this was worth reporting as a bug.


-- Expected outcome:
     Piuparts Ran successfully and reported no errors

-- System Information:
Debian Release: trixie/sid
  APT prefers stable-security
  APT policy: (500, 'stable-security'), (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.12.22-amd64 (SMP w/4 CPU threads; PREEMPT)
Kernel taint flags: TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_IN, LC_CTYPE=en_IN (charmap=UTF-8), LANGUAGE=en_IN:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages piuparts depends on:
ii  debsums          3.0.2.1
ii  libjs-sphinxdoc  8.1.3-5
ii  lsb-release      12.1-1
ii  lsof             4.99.4+dfsg-2
ii  mount            2.41-4
ii  piuparts-common  1.6.0
ii  python3          3.13.2-2
ii  python3-debian   1.0.1

Versions of packages piuparts recommends:
ii  adequate     0.17.5+b4
ii  debootstrap  1.0.140
ii  mmdebstrap   1.5.7-1

Versions of packages piuparts suggests:
ii  docker.io  26.1.5+dfsg1-9+b3
ii  schroot    1.6.13-6
ii  uidmap     1:4.17.4-1

-- no debconf information