(gdb) bt
#0  0x00007ffff6ef7445 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff6efabab in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00005555555ad8c4 in rb_bug (fmt=0x55555573f1d7 "Segmentation fault") at error.c:309
#3  0x000055555567f607 in sigsegv (sig=11, info=0x555555a5aa70, ctx=0x555555a5a940) at signal.c:649
#4  <signal handler called>
#5  0x0000555555688a40 in st_lookup (table=0x555555e029a0, key=2933, value=0x7fffffffab60) at st.c:414
#6  0x00005555556cc2be in rb_const_get_0 (klass=93825001326640, id=2933, exclude=0, recurse=1, visibility=0) at variable.c:1830
#7  0x00005555556cc3b0 in rb_const_get (klass=93825001326640, id=2933) at variable.c:1873
#8  0x00005555556ebac8 in vm_get_ev_const (th=0x5555559f0590, iseq=0x555555b6cb60, orig_klass=8, id=2933, is_defined=0) at vm_insnhelper.c:441
#9  0x00005555556f17a9 in vm_exec_core (th=0x5555559f0590, initial=0) at insns.def:197
#10 0x0000555555702823 in vm_exec (th=0x5555559f0590) at vm.c:1175
#11 0x00005555557013f0 in invoke_block_from_c (th=0x5555559f0590, block=0x555555e06d20, self=93825001649880, argc=0, argv=0x7fffffffbc60, blockptr=0x0, cref=0x0, defined_class=93825001279320) at vm.c:648
#12 0x000055555570161f in vm_invoke_proc (th=0x5555559f0590, proc=0x555555e06d20, self=93825001649880, defined_class=93825001279320, argc=0, argv=0x7fffffffbc60, blockptr=0x0) at vm.c:696
#13 0x00005555556ef240 in vm_call_bmethod_body (th=0x5555559f0590, ci=0x555555b83b10, argv=0x7fffffffbc60) at vm_insnhelper.c:1560
#14 0x00005555556ef58e in vm_call_bmethod (th=0x5555559f0590, cfp=0x7ffff6b08e80, ci=0x555555b83b10) at vm_insnhelper.c:1575
#15 0x00005555556efdf2 in vm_call_method (th=0x5555559f0590, cfp=0x7ffff6b08e80, ci=0x555555b83b10) at vm_insnhelper.c:1722
#16 0x00005555556f03bb in vm_call_general (th=0x5555559f0590, reg_cfp=0x7ffff6b08e80, ci=0x555555b83b10) at vm_insnhelper.c:1851
#17 0x00005555556f3ddb in vm_exec_core (th=0x5555559f0590, initial=0) at insns.def:1017
#18 0x0000555555702823 in vm_exec (th=0x5555559f0590) at vm.c:1175
#19 0x00005555557013f0 in invoke_block_from_c (th=0x5555559f0590, block=0x7ffff6b08f40, self=93824997116160, argc=1, argv=0x7fffffffcc18, blockptr=0x0, cref=0x0, defined_class=93824997116080) at vm.c:648
#20 0x000055555570151f in vm_yield (th=0x5555559f0590, argc=1, argv=0x7fffffffcc18) at vm.c:679
#21 0x00005555556fdb6c in rb_yield_0 (argc=1, argv=0x7fffffffcc18) at vm_eval.c:897
#22 0x00005555556ffaad in catch_i (tag=3878156, data=0) at vm_eval.c:1716
#23 0x00005555556ffc4f in rb_catch_obj (tag=3878156, func=0x5555556ffa8c <catch_i>, data=0) at vm_eval.c:1791
#24 0x00005555556ffb15 in rb_f_catch (argc=1, argv=0x7ffff6a09068) at vm_eval.c:1767
#25 0x00005555556ede2d in call_cfunc_m1 (func=0x5555556ffaaf <rb_f_catch>, recv=93824997116160, argc=1, argv=0x7ffff6a09068) at vm_insnhelper.c:1294
#26 0x00005555556eeba0 in vm_call_cfunc_with_frame (th=0x5555559f0590, reg_cfp=0x7ffff6b08f20, ci=0x555555b84f00) at vm_insnhelper.c:1438
#27 0x00005555556eee6c in vm_call_cfunc (th=0x5555559f0590, reg_cfp=0x7ffff6b08f20, ci=0x555555b84f00) at vm_insnhelper.c:1528
#28 0x00005555556efc11 in vm_call_method (th=0x5555559f0590, cfp=0x7ffff6b08f20, ci=0x555555b84f00) at vm_insnhelper.c:1702
#29 0x00005555556f03bb in vm_call_general (th=0x5555559f0590, reg_cfp=0x7ffff6b08f20, ci=0x555555b84f00) at vm_insnhelper.c:1851
#30 0x00005555556f3cf4 in vm_exec_core (th=0x5555559f0590, initial=0) at insns.def:1002
#31 0x0000555555702823 in vm_exec (th=0x5555559f0590) at vm.c:1175
#32 0x0000555555703884 in rb_iseq_eval_main (iseqval=93824997346600) at vm.c:1423
#33 0x00005555555b2f0f in ruby_exec_internal (n=0x555555a34d28) at eval.c:250
#34 0x00005555555b3022 in ruby_exec_node (n=0x555555a34d28) at eval.c:315
#35 0x00005555555b2ff5 in ruby_run_node (n=0x555555a34d28) at eval.c:307
#36 0x0000555555574f99 in main (argc=6, argv=0x7fffffffe048) at main.c:36
(gdb) fr 5
#5  0x0000555555688a40 in st_lookup (table=0x555555e029a0, key=2933, value=0x7fffffffab60) at st.c:414
414         hash_val = do_hash(key, table);
(gdb) fr 9
#9  0x00005555556f17a9 in vm_exec_core (th=0x5555559f0590, initial=0) at insns.def:197
197         val = vm_get_ev_const(th, GET_ISEQ(), klass, id, 0);
(gdb) rb_id2name(id)
T_STRING: "Kernel" bytesize:6 (embed) encoding:2 coderange:7bit $1 = (struct RString *) 0x555555a53778