#0  0x00007f785df14d27 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
        resultvar = 0
        pid = 9044
        selftid = 9052
#1  0x00007f785df16418 in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, sa_mask = {__val = {0 <repeats 16 times>}}, sa_flags = 0, sa_restorer = 0x0}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f785df569f4 in __libc_message (do_abort=do_abort@entry=1, fmt=fmt@entry=0x7f785e05fa40 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
        ap = {{gp_offset = 40, fp_offset = 0, overflow_arg_area = 0x7f784abfabd0, reg_save_area = 0x7f784abfab60}}
        fd = 2
        on_2 = <optimized out>
        list = <optimized out>
        nlist = <optimized out>
        cp = <optimized out>
        written = <optimized out>
#3  0x00007f785df5e006 in malloc_printerr (ptr=<optimized out>, str=0x7f785e05fb28 "double free or corruption (!prev)", action=1) at malloc.c:4996
        buf = "0000000001f17540"
        cp = <optimized out>
#4  _int_free (av=<optimized out>, p=<optimized out>, have_lock=0) at malloc.c:3840
        size = <optimized out>
        fb = <optimized out>
        nextchunk = <optimized out>
        nextsize = <optimized out>
        nextinuse = <optimized out>
        prevsize = <optimized out>
        bck = <optimized out>
        fwd = <optimized out>
        errstr = <optimized out>
        locked = <optimized out>
#5  0x00007f785e884424 in std::string::reserve(unsigned long) () from /tmp/apport_sandbox_676TYy/usr/lib/x86_64-linux-gnu/libstdc++.so.6
No symbol table info available.
#6  0x0000000000665682 in push_back (__c=<optimized out>, this=<optimized out>) at /usr/include/c++/4.8/bits/basic_string.h:1056
        __len = <optimized out>
#7  operator+= (__c=<optimized out>, this=<optimized out>) at /usr/include/c++/4.8/bits/basic_string.h:952
No locals.
#8  bufchar (c=<optimized out>, this=<optimized out>) at /build/buildd/minetest-0.4.10+repack/src/log.cpp:157
No locals.
#9  Logbuf::xsputn (this=0xa30b20 <verbosebuf>, s=<optimized out>, n=42) at /build/buildd/minetest-0.4.10+repack/src/log.cpp:137
        i = 0
#10 0x00007f785e8599e6 in std::basic_ostream<char, std::char_traits<char> >& std::__ostream_insert<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*, long) () from /tmp/apport_sandbox_676TYy/usr/lib/x86_64-linux-gnu/libstdc++.so.6
No symbol table info available.
#11 0x000000000049d916 in operator<< <char, std::char_traits<char>, std::allocator<char> > (__str=..., __os=...) at /usr/include/c++/4.8/bits/basic_string.h:2758
No locals.
#12 ScriptApiBase::loadScript (this=this@entry=0x1f16598, scriptpath=...) at /build/buildd/minetest-0.4.10+repack/src/script/cpp_api/s_base.cpp:128
        ret = <optimized out>
#13 0x000000000049bb93 in AsyncWorkerThread::Thread (this=0x1f16520) at /build/buildd/minetest-0.4.10+repack/src/script/cpp_api/s_async.cpp:258
        number = "0", '\000' <repeats 19 times>
        script = {static npos = <optimized out>, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x7f7840000af8 "/usr/share/games/minetest/builtin/init.lua"}}
#14 0x0000000000489963 in JThread::TheThread (param=0x1f16520) at /build/buildd/minetest-0.4.10+repack/src/jthread/pthread/jthread.cpp:160
        jthread = 0x1f16520
#15 0x00007f785f2300a5 in start_thread (arg=0x7f784abfb700) at pthread_create.c:309
        __res = <optimized out>
        pd = 0x7f784abfb700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140154626881280, -2784367922501641199, 0, 0, 140154626881984, 140154626881280, 2858489848032664593, 2858464590362450961}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#16 0x00007f785dfd884d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.