#0  utilBuildPackageId (ver=...) at apt-utils.cpp:396
        package_id = <optimized out>
        vf = <optimized out>
        data = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x7fca61819b50 ""}, _M_string_length = 0, {_M_local_buf = "\000\000\000\000\000\000\000\000z\026(`\312\177\000", _M_allocated_capacity = 0}}
        pkg = <optimized out>
#1  0x00007fca622b4e60 in AptIntf::emitPackage (this=0x55ef029ce0e0, ver=..., state=state@entry=PK_INFO_ENUM_DOWNLOADING) at apt-intf.cpp:431
        package_id = <optimized out>
#2  0x00007fca622a530d in AcqPackageKitStatus::updateStatus (this=0x7fca6181a4d0, Itm=..., status=0) at acqpkitstatus.cpp:211
        role = <optimized out>
        archive = <optimized out>
        ver = {<pkgCache::Iterator<pkgCache::Version, pkgCache::VerIterator>> = {<std::iterator<std::forward_iterator_tag, pkgCache::Version, long, pkgCache::Version*, pkgCache::Version&>> = {<No data fields>}, S = 0x7fca4c0d8570, Owner = 0x7fca4c0b68e0}, <No data fields>}
#3  0x00007fca6075bbc9 in pkgAcquire::Worker::RunMessages (this=this@entry=0x7fca54045cf0) at ./apt-pkg/acquire-worker.cc:375
        Owner = 0x7fca4c011bf0
        __for_range = <optimized out>
        __for_begin = <optimized out>
        __for_end = <optimized out>
        Message = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x7fca4c0c3e30 "200 URI Start\nLast-Modified: Thu, 08 Mar 2018 06:15:10 +0000\nURI: http://mirrors.ubuntu.com/mirrors.txt\nSize: 164"}, _M_string_length = 113, {_M_local_buf = "q\000\000\000\000\000\000\000\000\376\274=%\320\343\034", _M_allocated_capacity = 113}}
        End = 0x7fca4c0c3e33 " URI Start\nLast-Modified: Thu, 08 Mar 2018 06:15:10 +0000\nURI: http://mirrors.ubuntu.com/mirrors.txt\nSize: 164"
        Number = <optimized out>
        URI = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x7fca4c0e8a00 "http://mirrors.ubuntu.com/mirrors.txt"}, _M_string_length = 37, {_M_local_buf = "%\000\000\000\000\000\000\000\340\236\201a\312\177\000", _M_allocated_capacity = 37}}
        Itm = <optimized out>
#4  0x00007fca6075eebc in pkgAcquire::Worker::InFdReady (this=this@entry=0x7fca54045cf0) at ./apt-pkg/acquire-worker.cc:870
No locals.
#5  0x00007fca6075fe14 in pkgAcquire::RunFdsSane (this=this@entry=0x7fca6181a470, RSet=RSet@entry=0x7fca6181a270, WSet=WSet@entry=0x7fca6181a2f0) at ./apt-pkg/acquire.cc:548
        I = 0x7fca54045cf0
        Res = true
#6  0x00007fca6076590a in pkgAcquire::Run (this=this@entry=0x7fca6181a470, PulseIntervall=PulseIntervall@entry=500000) at ./apt-pkg/acquire.cc:720
        RFds = {fds_bits = {17179869184, 0 <repeats 15 times>}}
        WFds = {fds_bits = {0 <repeats 16 times>}}
        Highest = 34
        Res = 1
        WasCancelled = false
        tv = {tv_sec = 0, tv_usec = 365590}
        newError = <optimized out>
#7  0x00007fca622c1034 in AptIntf::installPackages (this=this@entry=0x55ef029ce0e0, flags=flags@entry=10, autoremove=autoremove@entry=false) at apt-intf.cpp:2344
        simulate = false
        backend = <optimized out>
        Stat = {<pkgAcquireStatus> = {_vptr.pkgAcquireStatus = 0x7fca624cdad0 <vtable for AcqPackageKitStatus+16>, d = 0x0, Time = {tv_sec = 1520494533, tv_usec = 960712}, StartTime = {tv_sec = 1520494533, tv_usec = 960712}, LastBytes = 0, CurrentCPS = 0, CurrentBytes = 0, TotalBytes = 84472, FetchedBytes = 0, ElapsedTime = 0, TotalItems = 3, CurrentItems = 0, Percent = 0, Update = false, MorePulses = false}, m_job = 0x55ef029c89b0, m_lastPercent = 0, m_lastCPS = 0, m_apt = 0x55ef029ce0e0}
        fetcher = {_vptr.pkgAcquire = 0x7fca60a971f0 <vtable for pkgAcquire+16>, LockFD = 14, d = 0x0, Items = {<std::_Vector_base<pkgAcquire::Item*, std::allocator<pkgAcquire::Item*> >> = {_M_impl = {<std::allocator<pkgAcquire::Item*>> = {<__gnu_cxx::new_allocator<pkgAcquire::Item*>> = {<No data fields>}, <No data fields>}, _M_start = 0x7fca4c004e50, _M_finish = 0x7fca4c004e70, _M_end_of_storage = 0x7fca4c004e70}}, <No data fields>}, Queues = 0x7fca4c0fa9a0, Workers = 0x7fca54045cf0, Configs = 0x7fca4c0fccd0, Log = 0x7fca6181a4d0, ToFetch = 4, QueueMode = pkgAcquire::QueueHost, Debug = false, Running = true}
        PM = <optimized out>
        FetchBytes = 84472
        FetchPBytes = 0
        DebBytes = <optimized out>
        Buf = {f_bsize = 4096, f_frsize = 4096, f_blocks = 5524480, f_bfree = 729548, f_bavail = 595744, f_files = 0, f_ffree = 0, f_favail = 0, f_fsid = 13983422364670290002, f_flag = 4096, f_namemax = 255, __f_spare = {0, 0, 0, 0, 0, 0}}
        OutputDir = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x7fca4c0b4f60 "/var/cache/apt/archives/"}, _M_string_length = 24, {_M_local_buf = "\030", '\000' <repeats 14 times>, _M_allocated_capacity = 24}}
        res = <optimized out>
        readFromChildFD = {1276103584, 32714}
        pty_master = 32714
        ret = 1239511786
        masterbuf = "\240\247\201a\312\177\000\000P\247\201a\312\177\000\000\037\000\000\000\000\000\000\000\000\376\274=%\320\343\034@\247\201a\312\177", '\000' <repeats 18 times>, "\001\000\000\000\000\000\000\000 \250\201a\312\177\000\000\001", '\000' <repeats 15 times>, "\206\255\206e\312\177", '\000' <repeats 18 times>, "\037\000\000\000\312\177\000\000\263$~`\312\177\000\000(\000\000\000\000\000\000\000\200\a\005L\312\177\000\000\377\377\377\377\312\177\000\000\334\247\201a\312\177\000\000\000\000\000\000\000\000\000\000\360\200\334L\312\177\000\000\310\004\005L\312\177\000\000\220\177\334L\312\177\000\000 \250\201a\312\177\000\000"...
#8  0x00007fca622c228c in AptIntf::runTransaction (this=this@entry=0x55ef029ce0e0, install=..., remove=..., update=..., fixBroken=fixBroken@entry=false, flags=10, autoremove=false) at apt-intf.cpp:2215
        simulate = false
        BrokenFix = <optimized out>
        Fix = {_vptr.pkgProblemResolver = 0x7fca60a97438 <vtable for pkgProblemResolver+16>, d = 0x0, Cache = @0x7fca4c056400, Scores = 0x7fca4cdd0fd0, Flags = 0x7fca4cdae250 '\004' <repeats 200 times>..., Debug = false}
#9  0x00007fca622c5afd in backend_manage_packages_thread (job=0x55ef029c89b0, params=<optimized out>, user_data=<optimized out>) at pk-backend-aptcc.cpp:897
        transaction_flags = 10
        allow_deps = 0
        autoremove = 0
        full_paths = 0x0
        package_ids = 0x7fca54044ac0
        role = PK_ROLE_ENUM_UPDATE_PACKAGES
        simulate = <optimized out>
        downloadOnly = <optimized out>
        fixBroken = false
        apt = 0x55ef029ce0e0
        installPkgs = {<std::vector<pkgCache::VerIterator, std::allocator<pkgCache::VerIterator> >> = {<std::_Vector_base<pkgCache::VerIterator, std::allocator<pkgCache::VerIterator> >> = {_M_impl = {<std::allocator<pkgCache::VerIterator>> = {<__gnu_cxx::new_allocator<pkgCache::VerIterator>> = {<No data fields>}, <No data fields>}, _M_start = 0x0, _M_finish = 0x0, _M_end_of_storage = 0x0}}, <No data fields>}, <No data fields>}
        removePkgs = {<std::vector<pkgCache::VerIterator, std::allocator<pkgCache::VerIterator> >> = {<std::_Vector_base<pkgCache::VerIterator, std::allocator<pkgCache::VerIterator> >> = {_M_impl = {<std::allocator<pkgCache::VerIterator>> = {<__gnu_cxx::new_allocator<pkgCache::VerIterator>> = {<No data fields>}, <No data fields>}, _M_start = 0x0, _M_finish = 0x0, _M_end_of_storage = 0x0}}, <No data fields>}, <No data fields>}
        updatePkgs = {<std::vector<pkgCache::VerIterator, std::allocator<pkgCache::VerIterator> >> = {<std::_Vector_base<pkgCache::VerIterator, std::allocator<pkgCache::VerIterator> >> = {_M_impl = {<std::allocator<pkgCache::VerIterator>> = {<__gnu_cxx::new_allocator<pkgCache::VerIterator>> = {<No data fields>}, <No data fields>}, _M_start = 0x7fca4c0de740, _M_finish = 0x7fca4c0de750, _M_end_of_storage = 0x7fca4c0de750}}, <No data fields>}, <No data fields>}
        ret = <optimized out>
#10 0x000055ef01408a3a in pk_backend_job_thread_setup (thread_data=0x55ef029aef30) at pk-backend-job.c:813
        helper = 0x55ef029aef30
#11 0x00007fca66072d15 in g_thread_proxy (data=0x7fca54005e30) at ../../../../glib/gthread.c:784
        thread = 0x7fca54005e30
        _g_boolean_var_ = <optimized out>
#12 0x00007fca65b636db in start_thread (arg=0x7fca6181b700) at pthread_create.c:463
        pd = 0x7fca6181b700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140507196012288, -7024774357241876078, 140507196009984, 0, 140506969431600, 140726886380448, 6995849387227427218, 6995840216671400338}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#13 0x00007fca6588c88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.