.
Thread 1 (LWP 8215):
#0  pkgPolicy::GetPriority (this=0x562a931ea5d0, Ver=..., ConsiderFiles=<optimized out>) at /build/apt-ke47OC/apt-1.2.24/apt-pkg/policy.cc:384
        file = {<pkgCache::Iterator<pkgCache::VerFile, pkgCache::VerFileIterator>> = {<std::iterator<std::forward_iterator_tag, pkgCache::VerFile, long, pkgCache::VerFile*, pkgCache::VerFile&>> = {<No data fields>}, S = 0x7f496043b9c0, Owner = 0x562a931aa220}, <No data fields>}
        priority = 500
#1  0x00007f4963a9aeca in pkgPolicy::GetCandidateVerNew (this=this@entry=0x562a931ea5d0, Pkg=...) at /build/apt-ke47OC/apt-1.2.24/apt-pkg/policy.cc:239
        priority = <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 = 0x7f49603d6f00, Owner = 0x562a931aa220}, <No data fields>}
        cand = {<pkgCache::Iterator<pkgCache::Version, pkgCache::VerIterator>> = {<std::iterator<std::forward_iterator_tag, pkgCache::Version, long, pkgCache::Version*, pkgCache::Version&>> = {<No data fields>}, S = 0x0, Owner = 0x0}, <No data fields>}
        cur = {<pkgCache::Iterator<pkgCache::Version, pkgCache::VerIterator>> = {<std::iterator<std::forward_iterator_tag, pkgCache::Version, long, pkgCache::Version*, pkgCache::Version&>> = {<No data fields>}, S = 0x7f495ec2f000, Owner = 0x562a931aa220}, <No data fields>}
        candPriority = -1
        vs = 0x7f4963ceb790 <debVS>
#2  0x00007f4963a9b296 in pkgPolicy::GetCandidateVer (this=0x562a931ea5d0, Pkg=...) at /build/apt-ke47OC/apt-1.2.24/apt-pkg/policy.cc:136
No locals.
#3  0x00007f4963a64e73 in pkgDepCache::Init (this=this@entry=0x562a931ee2f0, Prog=Prog@entry=0x7ffdbc95b530) at /build/apt-ke47OC/apt-1.2.24/apt-pkg/depcache.cc:158
        State = @0x7f495e03e9a0: {CandVersion = 0x0, CurVersion = 0x0, CandidateVer = 0x0, InstallVer = 0x0, Flags = 0, iFlags = 0, Marked = false, Garbage = false, Status = 0 '\000', Mode = 0 '\000', DepState = 0 '\000'}
        I = {<pkgCache::Iterator<pkgCache::Package, pkgCache::PkgIterator>> = {<std::iterator<std::forward_iterator_tag, pkgCache::Package, long, pkgCache::Package*, pkgCache::Package&>> = {<No data fields>}, S = 0x7f4960099d0c, Owner = 0x562a931aa220}, HashIndex = 29577}
        actions = {_vptr.ActionGroup = 0x7f4963ce8ee8 <vtable for pkgDepCache::ActionGroup+16>, d = 0x0, cache = @0x562a931ee2f0, released = false}
        Done = 66231
#4  0x00007f49639f9d8b in pkgCacheFile::BuildDepCache (this=this@entry=0x7ffdbc95b2f0, Progress=Progress@entry=0x7ffdbc95b530) at /build/apt-ke47OC/apt-1.2.24/apt-pkg/cachefile.cc:189
        DCache = {_M_t = {<std::_Tuple_impl<0ul, pkgDepCache*, std::default_delete<pkgDepCache> >> = {<std::_Tuple_impl<1ul, std::default_delete<pkgDepCache> >> = {<std::_Head_base<1ul, std::default_delete<pkgDepCache>, true>> = {<std::default_delete<pkgDepCache>> = {<No data fields>}, <No data fields>}, <No data fields>}, <std::_Head_base<0ul, pkgDepCache*, false>> = {_M_head_impl = 0x562a931ee2f0}, <No data fields>}, <No data fields>}}
#5  0x00007f49639f9e02 in pkgCacheFile::Open (this=this@entry=0x7ffdbc95b2f0, Progress=Progress@entry=0x7ffdbc95b530, WithLock=WithLock@entry=true) at /build/apt-ke47OC/apt-1.2.24/apt-pkg/cachefile.cc:207
No locals.
#6  0x00007f49637483e4 in CacheFile::Open (WithLock=true, this=0x7ffdbc95b2f0) at ../build/include/apt-private/private-cachefile.h:31
        Prog = {<OpProgress> = {_vptr.OpProgress = 0x562a92512138 <vtable for OpTextProgress+16>, Current = 0, Total = 224958, Size = 112479, SubTotal = 112479, LastPercent = 29.000967, LastTime = {tv_sec = 1517658226, tv_usec = 508921}, LastOp = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x562a9319e740 "Building dependency tree"}, _M_string_length = 24, {_M_local_buf = "\036\000\000\000\000\000\000\000\200s\031\223*V\000", _M_allocated_capacity = 30}}, LastSubOp = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x562a931ef5c0 "Candidate versions"}, _M_string_length = 18, {_M_local_buf = "\036\000\000\000\000\000\000\000\071\346\240cI\177\000", _M_allocated_capacity = 30}}, Op = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x562a931991f0 "Building dependency tree"}, _M_string_length = 24, {_M_local_buf = "\036\000\000\000\000\000\000\000 \354\030\223*V\000", _M_allocated_capacity = 30}}, SubOp = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x562a9319cbb0 "Candidate versions"}, _M_string_length = 18, {_M_local_buf = "\036\000\000\000\000\000\000\000\226\346\240cI\177\000", _M_allocated_capacity = 30}}, Percent = 29.4366055, MajorChange = false}, OldOp = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x562a931f5960 "Building dependency tree"}, _M_string_length = 24, {_M_local_buf = "\036\000\000\000\000\000\000\000\005\000\000\000\000\000\000", _M_allocated_capacity = 30}}, NoUpdate = false, NoDisplay = false, LastLen = 31}
#7  CacheFile::OpenForInstall (this=0x7ffdbc95b2f0) at ../build/include/apt-private/private-cachefile.h:38
No locals.
#8  DoInstall (CmdL=...) at /build/apt-ke47OC/apt-1.2.24/apt-private/private-install.cc:718
        Cache = {<pkgCacheFile> = {_vptr.pkgCacheFile = 0x562a92511a70 <vtable for CacheFile+16>, d = 0x0, ExternOwner = false, Map = 0x562a931aa170, Cache = 0x562a931aa220, DCache = 0x0, SrcList = 0x562a9319a730, Policy = 0x562a931ea5d0}, UniverseList = {<std::_Vector_base<unsigned int, std::allocator<unsigned int> >> = {_M_impl = {<std::allocator<unsigned int>> = {<__gnu_cxx::new_allocator<unsigned int>> = {<No data fields>}, <No data fields>}, _M_start = 0x0, _M_finish = 0x0, _M_end_of_storage = 0x0}}, <No data fields>}}
        VolatileCmdL = {<std::_Vector_base<char const*, std::allocator<char const*> >> = {_M_impl = {<std::allocator<char const*>> = {<__gnu_cxx::new_allocator<char const*>> = {<No data fields>}, <No data fields>}, _M_start = 0x0, _M_finish = 0x0, _M_end_of_storage = 0x0}}, <No data fields>}
        verset = {_M_t = {_M_impl = {<std::allocator<std::_Rb_tree_node<std::pair<unsigned short const, APT::VersionContainer<std::set<pkgCache::VerIterator, std::less<pkgCache::VerIterator>, std::allocator<pkgCache::VerIterator> > > > > >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<unsigned short const, APT::VersionContainer<std::set<pkgCache::VerIterator, std::less<pkgCache::VerIterator>, std::allocator<pkgCache::VerIterator> > > > > >> = {<No data fields>}, <No data fields>}, _M_key_compare = {<std::binary_function<unsigned short, unsigned short, bool>> = {<No data fields>}, <No data fields>}, _M_header = {_M_color = (unknown: 24), _M_parent = 0x1a, _M_left = 0x7ffdbc95b310, _M_right = 0x0}, _M_node_count = 139953168475452}}}
        Universe = {<APT::PackageUniverse> = {<APT::PackageContainerInterface> = {_vptr.PackageContainerInterface = 0x7ffdbc95b450, ConstructedBy = 3163927728, d = 0x6}, _cont = 0x58, d = 0x7ffdbc95b350}, List = @0x7ffdbc95b460}
#9  0x00007f4963a0dae6 in CommandLine::DispatchArg (this=0x7ffdbc95b6d0, Map=<optimized out>, NoMatch=NoMatch@entry=true) at /build/apt-ke47OC/apt-1.2.24/apt-pkg/contrib/cmndline.cc:369
        Res = <optimized out>
        I = <optimized out>
#10 0x00007f4963739fc3 in DispatchCommandLine (CmdL=..., Cmds=...) at /build/apt-ke47OC/apt-1.2.24/apt-private/private-cmndline.cc:512
        returned = <optimized out>
#11 0x0000562a9230bb39 in main (argc=<optimized out>, argv=0x7ffdbc95b818) at /build/apt-ke47OC/apt-1.2.24/cmdline/apt-get.cc:446
        CmdL = {ArgList = 0x562a93197840, Conf = 0x562a9318ec20, FileList = 0x562a93196280}
        Cmds = {<std::_Vector_base<CommandLine::Dispatch, std::allocator<CommandLine::Dispatch> >> = {_M_impl = {<std::allocator<CommandLine::Dispatch>> = {<__gnu_cxx::new_allocator<CommandLine::Dispatch>> = {<No data fields>}, <No data fields>}, _M_start = 0x562a93197630, _M_finish = 0x562a931977b0, _M_end_of_storage = 0x562a93197830}}, <No data fields>}