python3.6 crashed with SIGABRT in qt_message_fatal()

[Антон Дерлюк]

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ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: python3.6-minimal 3.6.5~rc1-1
ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
Uname: Linux 4.15.0-13-generic x86_64
ApportVersion: 2.20.9-0ubuntu1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Mar 26 21:40:00 2018
ExecutablePath: /usr/bin/python3.6
InstallationDate: Installed on 2018-03-12 (13 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180310)
ProcCmdline: /usr/bin/python3 /usr/bin/mkchromecast -t
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
Python3Details: /usr/bin/python3.6, Python 3.6.5rc1, python3-minimal, 3.6.4-1
PythonDetails: /home/anton/Error: command ['which', 'python'] failed with exit code 1:, Error: [Errno 2] Нет такого файла или каталога: "/home/anton/Error: command ['which', 'python'] failed with exit code 1:": "/home/anton/Error: command ['which', 'python'] failed with exit code 1:", unpackaged
Signal: 6
SourcePackage: python3.6
StacktraceTop:
 QMessageLogger::fatal(char const*, ...) const () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
 QThread::~QThread() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
 ?? () from /usr/lib/python3/dist-packages/PyQt5/QtCore.cpython-36m-x86_64-linux-gnu.so
 ?? () from /usr/lib/python3/dist-packages/sip.cpython-36m-x86_64-linux-gnu.so
 ?? () from /usr/lib/python3/dist-packages/sip.cpython-36m-x86_64-linux-gnu.so
Title: python3.6 crashed with SIGABRT in QMessageLogger::fatal()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 qt_message_fatal (context=..., message=<synthetic pointer>...) at global/qlogging.cpp:1690
 QMessageLogger::fatal (this=this@entry=0x7ffd768337c0, msg=msg@entry=0x7f0d15c01758 "QThread: Destroyed while thread is still running") at global/qlogging.cpp:796
 QThread::~QThread (this=0x18cd350, __in_chrg=<optimized out>) at thread/qthread.cpp:429
 sipQThread::~sipQThread (this=0x18cd350, __in_chrg=<optimized out>) at ./build-3.6/QtCore/sipQtCorepart2.cpp:10069
 forgetObject (sw=sw@entry=0x7f0d0f81ad38) at siplib.c:12032