#0  0x00007ff24f05a36e in _int_free (av=0x7ff208000020, p=0x7ff208013ba0, have_lock=0) at malloc.c:4049
        size = 2288
        fb = <optimized out>
        nextchunk = 0x7ff208014490
        nextsize = 12896
        nextinuse = 0
        prevsize = <optimized out>
        bck = 0x7ff208000778
        fwd = 0x2000010315000778
        errstr = 0x0
        locked = <optimized out>
#1  0x00007ff24f05e12c in __GI___libc_free (mem=<optimized out>) at malloc.c:2982
        ar_ptr = <optimized out>
        p = <optimized out>
        hook = <optimized out>
#2  0x00007ff23eb520dd in CRYPTO_free () from /tmp/apport_sandbox_N6JOLT/lib/x86_64-linux-gnu/libcrypto.so.1.0.0
No symbol table info available.
#3  0x00007ff23ec0e9be in EVP_CIPHER_CTX_cleanup () from /tmp/apport_sandbox_N6JOLT/lib/x86_64-linux-gnu/libcrypto.so.1.0.0
No symbol table info available.
#4  0x00007ff23e62910d in ssl_clear_cipher_ctx () from /tmp/apport_sandbox_N6JOLT/lib/x86_64-linux-gnu/libssl.so.1.0.0
No symbol table info available.
#5  0x00007ff23e629f19 in SSL_free () from /tmp/apport_sandbox_N6JOLT/lib/x86_64-linux-gnu/libssl.so.1.0.0
No symbol table info available.
#6  0x00007ff23e862b44 in PySSL_dealloc.lto_priv.12 () from /tmp/apport_sandbox_N6JOLT/usr/lib/python3.5/lib-dynload/_ssl.cpython-35m-x86_64-linux-gnu.so
No symbol table info available.
#7  0x00005643773e49e5 in dict_dealloc.lto_priv ()
No symbol table info available.
#8  0x00005643773bc358 in subtype_dealloc ()
No symbol table info available.
#9  0x00005643773e3b89 in PyDict_SetItem ()
No symbol table info available.
#10 0x00005643773e595d in _PyObjectDict_SetItem ()
No symbol table info available.
#11 0x00005643773c706d in _PyObject_GenericSetAttrWithDict ()
No symbol table info available.
#12 0x00005643773c76d1 in PyObject_SetAttr ()
No symbol table info available.
#13 0x000056437736951e in PyEval_EvalFrameEx ()
No symbol table info available.
#14 0x000056437736d43f in PyEval_EvalFrameEx ()
No symbol table info available.
#15 0x000056437736d43f in PyEval_EvalFrameEx ()
No symbol table info available.
#16 0x000056437736d43f in PyEval_EvalFrameEx ()
No symbol table info available.
#17 0x0000564377372b5f in PyEval_EvalCodeEx ()
No symbol table info available.
#18 0x00005643773b81c3 in function_call.lto_priv ()
No symbol table info available.
#19 0x00005643773f4887 in PyObject_Call ()
No symbol table info available.
#20 0x0000564377316f3e in method_call.lto_priv ()
No symbol table info available.
#21 0x00005643773f4887 in PyObject_Call ()
No symbol table info available.
#22 0x00005643773f5a0d in PyObject_CallMethodObjArgs ()
No symbol table info available.
#23 0x000056437731065b in buffered_close ()
No symbol table info available.
#24 0x000056437736cf11 in PyEval_EvalFrameEx ()
No symbol table info available.
#25 0x000056437736d43f in PyEval_EvalFrameEx ()
No symbol table info available.
#26 0x000056437737224f in _PyEval_EvalCodeWithName ()
No symbol table info available.
#27 0x000056437736dfd9 in PyEval_EvalFrameEx ()
No symbol table info available.
#28 0x000056437736d43f in PyEval_EvalFrameEx ()
No symbol table info available.
#29 0x000056437736d43f in PyEval_EvalFrameEx ()
No symbol table info available.
#30 0x000056437737224f in _PyEval_EvalCodeWithName ()
No symbol table info available.
#31 0x000056437736dfd9 in PyEval_EvalFrameEx ()
No symbol table info available.
#32 0x0000564377373297 in PyEval_EvalCodeEx ()
No symbol table info available.
#33 0x00005643773b81c3 in function_call.lto_priv ()
No symbol table info available.
#34 0x00005643773f4887 in PyObject_Call ()
No symbol table info available.
#35 0x000056437736ab55 in PyEval_EvalFrameEx ()
No symbol table info available.
#36 0x000056437737224f in _PyEval_EvalCodeWithName ()
No symbol table info available.
#37 0x000056437736dfd9 in PyEval_EvalFrameEx ()
No symbol table info available.
#38 0x0000564377371d16 in _PyEval_EvalCodeWithName ()
No symbol table info available.
#39 0x000056437736dbac in PyEval_EvalFrameEx ()
No symbol table info available.
#40 0x0000564377371d16 in _PyEval_EvalCodeWithName ()
No symbol table info available.
#41 0x000056437736dfd9 in PyEval_EvalFrameEx ()
No symbol table info available.
#42 0x0000564377371d16 in _PyEval_EvalCodeWithName ()
No symbol table info available.
#43 0x000056437736dbac in PyEval_EvalFrameEx ()
No symbol table info available.
#44 0x0000564377372b5f in PyEval_EvalCodeEx ()
No symbol table info available.
#45 0x00005643773b82cf in function_call.lto_priv ()
No symbol table info available.
#46 0x00005643773f4887 in PyObject_Call ()
No symbol table info available.
#47 0x0000564377316f3e in method_call.lto_priv ()
No symbol table info available.
#48 0x00005643773f4887 in PyObject_Call ()
No symbol table info available.
#49 0x00005643773af286 in slot_tp_call ()
No symbol table info available.
#50 0x00005643773f4887 in PyObject_Call ()
No symbol table info available.
#51 0x000056437736d961 in PyEval_EvalFrameEx ()
No symbol table info available.
#52 0x000056437736d43f in PyEval_EvalFrameEx ()
No symbol table info available.
#53 0x000056437736d43f in PyEval_EvalFrameEx ()
No symbol table info available.
#54 0x000056437736d43f in PyEval_EvalFrameEx ()
No symbol table info available.
#55 0x0000564377372b5f in PyEval_EvalCodeEx ()
No symbol table info available.
#56 0x00005643773b82cf in function_call.lto_priv ()
No symbol table info available.
#57 0x00005643773f4887 in PyObject_Call ()
No symbol table info available.
#58 0x000056437736ab55 in PyEval_EvalFrameEx ()
No symbol table info available.
#59 0x000056437736d43f in PyEval_EvalFrameEx ()
No symbol table info available.
#60 0x000056437736d43f in PyEval_EvalFrameEx ()
No symbol table info available.
#61 0x0000564377372b5f in PyEval_EvalCodeEx ()
No symbol table info available.
#62 0x00005643773b81c3 in function_call.lto_priv ()
No symbol table info available.
#63 0x00005643773f4887 in PyObject_Call ()
No symbol table info available.
#64 0x0000564377316f3e in method_call.lto_priv ()
No symbol table info available.
#65 0x00005643773f4887 in PyObject_Call ()
No symbol table info available.
#66 0x00005643773a9290 in PyEval_CallObjectWithKeywords ()
No symbol table info available.
#67 0x0000564377437182 in t_bootstrap ()
No symbol table info available.
#68 0x00007ff24f3a66da in start_thread (arg=0x7ff2217fa700) at pthread_create.c:456
        __res = <optimized out>
        pd = 0x7ff2217fa700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140677920827136, 6835350474206934932, 140734639807838, 140734639807839, 140677920827840, 140677920827136, -6829627515126483052, -6829544465177446508}, 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"
#69 0x00007ff24f0e017f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
No locals.