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From: Andrey Rakhmatullin &lt;wrar@debian.org&gt;
To: Debian Bug Tracking System &lt;submit@bugs.debian.org&gt;
Subject: mcaller: FTBFS: Can't pickle local object
Message-ID: &lt;178266242777.3346966.6317328449751484158.reportbug@belkar.wrar.name&gt;
X-Mailer: reportbug 13.2.0+nmu1
Date: Sun, 28 Jun 2026 21:00:27 +0500
X-Debian-User: wrar
Delivered-To: submit@bugs.debian.org

Source: mcaller
Version: 1.0.3+git20210624.b415090-3
Severity: serious
Tags: ftbfs

Traceback (most recent call last):
  File &quot;/build/reproducible-
path/mcaller-1.0.3+git20210624.b415090/./mCaller.py&quot;, line 187, in &lt;module&gt;
    main()
    ~~~~^^
  File &quot;/build/reproducible-
path/mcaller-1.0.3+git20210624.b415090/./mCaller.py&quot;, line 183, in main
distribute_threads(args.positions,args.motif,args.tsv,read2qual,args.reference,num_refs,base,mod,args.threads,args.num_variables,
~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
args.train,modelfile,args.skip_thresh,args.qual_thresh,args.classifier,training_tsv,args.plot_training)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File &quot;/build/reproducible-
path/mcaller-1.0.3+git20210624.b415090/./mCaller.py&quot;, line 70, in
distribute_threads
    p.start()
    ~~~~~~~^^
  File &quot;/usr/lib/python3.14/multiprocessing/process.py&quot;, line 121, in start
    self._popen = self._Popen(self)
                  ~~~~~~~~~~~^^^^^^
  File &quot;/usr/lib/python3.14/multiprocessing/context.py&quot;, line 230, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
  File &quot;/usr/lib/python3.14/multiprocessing/context.py&quot;, line 306, in _Popen
    return Popen(process_obj)
  File &quot;/usr/lib/python3.14/multiprocessing/popen_forkserver.py&quot;, line 35, in
__init__
    super().__init__(process_obj)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
  File &quot;/usr/lib/python3.14/multiprocessing/popen_fork.py&quot;, line 20, in
__init__
    self._launch(process_obj)
    ~~~~~~~~~~~~^^^^^^^^^^^^^
  File &quot;/usr/lib/python3.14/multiprocessing/popen_forkserver.py&quot;, line 47, in
_launch
    reduction.dump(process_obj, buf)
    ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File &quot;/usr/lib/python3.14/multiprocessing/reduction.py&quot;, line 60, in dump
    ForkingPickler(file, protocol).dump(obj)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^
_pickle.PicklingError: Can't pickle local object &lt;function
distribute_threads.&lt;locals&gt;.worker at 0x7f26d892fe20&gt;


-- System Information:
Debian Release: forky/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable'), (500, 'testing'), (101, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 7.0.12+deb14.1-amd64 (SMP w/16 CPU threads; PREEMPT)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
]