#0  0x00007fa98faae917 in sched_yield () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa98ff87195 in native_stop_timer_thread () at thread_pthread.c:1695
#2  rb_thread_stop_timer_thread () at thread.c:4153
#3  0x00007fa98ff174ea in before_exec_non_async_signal_safe () at process.c:2605
#4  before_exec () at process.c:1194
#5  rb_f_exec (argc=<optimized out>, argv=<optimized out>) at process.c:2605
#6  0x00007fa98ffab7a1 in vm_call_cfunc_with_frame (ci=0x55fadfc6d120, cc=<optimized out>, calling=<optimized out>, reg_cfp=0x7fa98f9c9e90, ec=0x55fadf1c9418)
    at vm_insnhelper.c:1918
#7  vm_call_cfunc (ec=<optimized out>, reg_cfp=<optimized out>, calling=<optimized out>, ci=<optimized out>, cc=<optimized out>) at vm_insnhelper.c:1934
#8  0x00007fa98ffb938b in vm_call_method_each_type (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=<optimized out>, ec=<optimized out>)
    at vm_insnhelper.c:2381
#9  vm_call_method (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=<optimized out>, ec=<optimized out>) at vm_insnhelper.c:2381
#10 vm_call_method (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=0x7fa98f9c9e90, ec=0x55fadf1c9418) at vm_insnhelper.c:2348
#11 vm_call_general (ec=0x55fadf1c9418, reg_cfp=0x7fa98f9c9e90, calling=<optimized out>, ci=<optimized out>, cc=<optimized out>) at vm_insnhelper.c:2398
#12 0x00007fa98ffb1306 in vm_exec_core (ec=0x7fa9900a43a0 <exec_arg_data_type>, ec@entry=0x55fadf1c9418, initial=140366242792352, initial@entry=0) at insns.def:915
#13 0x00007fa98ffb4ef4 in vm_exec (ec=ec@entry=0x55fadf1c9418) at vm.c:1778
#14 0x00007fa98ffbbe89 in invoke_block (captured=<optimized out>, opt_pc=<optimized out>, type=<optimized out>, cref=<optimized out>, self=<optimized out>, iseq=<optimized out>, 
    ec=<optimized out>) at vm.c:979
#15 invoke_iseq_block_from_c (is_lambda=<optimized out>, cref=<optimized out>, passed_block_handler=<optimized out>, argv=<optimized out>, argc=<optimized out>, 
    self=<optimized out>, captured=<optimized out>, ec=<optimized out>) at vm.c:1031
#16 invoke_block_from_c_bh (force_blockarg=<optimized out>, is_lambda=<optimized out>, cref=<optimized out>, passed_block_handler=<optimized out>, argv=<optimized out>, 
    argc=<optimized out>, block_handler=<optimized out>, ec=<optimized out>) at vm.c:1049
#17 vm_yield (argv=<optimized out>, argc=<optimized out>, ec=<optimized out>) at vm.c:1094
#18 rb_yield_0 (argv=<optimized out>, argc=<optimized out>) at vm_eval.c:970
#19 rb_yield_1 (val=<optimized out>) at vm_eval.c:976
#20 rb_yield (val=val@entry=52) at vm_eval.c:986
#21 0x00007fa98fe8e991 in rb_protect (proc=0x7fa98ffbbb70 <rb_yield>, data=data@entry=52, pstate=pstate@entry=0x7ffd205834fc) at eval.c:996
#22 0x00007fa98ff17892 in rb_f_fork (obj=<optimized out>) at process.c:3707
#23 rb_f_fork (obj=<optimized out>) at process.c:3698
#24 0x00007fa98ffab7a1 in vm_call_cfunc_with_frame (ci=0x55fadf57fbb0, cc=<optimized out>, calling=<optimized out>, reg_cfp=0x7fa98f9c9ef0, ec=0x55fadf1c9418)
    at vm_insnhelper.c:1918
#25 vm_call_cfunc (ec=<optimized out>, reg_cfp=<optimized out>, calling=<optimized out>, ci=<optimized out>, cc=<optimized out>) at vm_insnhelper.c:1934
#26 0x00007fa98ffb938b in vm_call_method_each_type (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=<optimized out>, ec=<optimized out>)
    at vm_insnhelper.c:2381
#27 vm_call_method (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=<optimized out>, ec=<optimized out>) at vm_insnhelper.c:2381
#28 vm_call_method (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=0x7fa98f9c9ef0, ec=0x55fadf1c9418) at vm_insnhelper.c:2348
#29 vm_call_general (ec=0x55fadf1c9418, reg_cfp=0x7fa98f9c9ef0, calling=<optimized out>, ci=<optimized out>, cc=<optimized out>) at vm_insnhelper.c:2398
#30 0x00007fa98ffb0a5a in vm_exec_core (ec=0x7fa9900a43a0 <exec_arg_data_type>, ec@entry=0x55fadf1c9418, initial=140366242792352, initial@entry=0) at insns.def:850
#31 0x00007fa98ffb4ef4 in vm_exec (ec=ec@entry=0x55fadf1c9418) at vm.c:1778
#32 0x00007fa98ffb956a in vm_call0_body (ec=ec@entry=0x55fadf1c9418, calling=calling@entry=0x7ffd20583d40, ci=ci@entry=0x7ffd20583d30, cc=cc@entry=0x7ffd20583d60, argv=argv@entry=0x7fa98f8ca110) at vm_eval.c:127
#33 0x00007fa98ffba687 in vm_call0 (me=0x55fadfb8faa8, argv=0x7fa98f8ca110, argc=2, id=3057, recv=94535990077000, ec=0x55fadf1c9418) at vm_eval.c:58
#34 rb_call0 (ec=0x55fadf1c9418, recv=recv@entry=94535990077000, mid=mid@entry=3057, argc=2, argc@entry=3057, argv=0x7fa98f8ca110, argv@entry=0x2, scope=scope@entry=CALL_FCALL, self=94535983627760) at vm_eval.c:296
#35 0x00007fa98ffbae6e in rb_call (scope=CALL_FCALL, argv=0x2, argc=3057, mid=3057, recv=94535990077000) at vm_eval.c:589
#36 rb_funcallv (recv=recv@entry=94535990077000, mid=mid@entry=3057, argc=argc@entry=2, argv=argv@entry=0x7fa98f8ca110) at vm_eval.c:815
#37 0x00007fa98fe90806 in rb_obj_call_init (obj=obj@entry=94535990077000, argc=argc@entry=2, argv=argv@entry=0x7fa98f8ca110) at eval.c:1590
#38 0x00007fa98fee6a51 in rb_class_s_new (argc=2, argv=0x7fa98f8ca110, klass=<optimized out>) at object.c:2152
#39 0x00007fa98ffab7a1 in vm_call_cfunc_with_frame (ci=0x55fadfedf4e0, cc=<optimized out>, calling=<optimized out>, reg_cfp=0x7fa98f9c9f50, ec=0x55fadf1c9418) at vm_insnhelper.c:1918
#40 vm_call_cfunc (ec=<optimized out>, reg_cfp=<optimized out>, calling=<optimized out>, ci=<optimized out>, cc=<optimized out>) at vm_insnhelper.c:1934
#41 0x00007fa98ffb938b in vm_call_method_each_type (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=<optimized out>, ec=<optimized out>) at vm_insnhelper.c:2381
#42 vm_call_method (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=<optimized out>, ec=<optimized out>) at vm_insnhelper.c:2381
#43 vm_call_method (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=0x7fa98f9c9f50, ec=0x55fadf1c9418) at vm_insnhelper.c:2348
#44 vm_call_general (ec=0x55fadf1c9418, reg_cfp=0x7fa98f9c9f50, calling=<optimized out>, ci=<optimized out>, cc=<optimized out>) at vm_insnhelper.c:2398
#45 0x00007fa98ffb1306 in vm_exec_core (ec=0x7fa9900a43a0 <exec_arg_data_type>, ec@entry=0x55fadf1c9418, initial=140366242792352, initial@entry=0) at insns.def:915
#46 0x00007fa98ffb4ef4 in vm_exec (ec=ec@entry=0x55fadf1c9418) at vm.c:1778
#47 0x00007fa98ffb956a in vm_call0_body (ec=ec@entry=0x55fadf1c9418, calling=calling@entry=0x7ffd20584640, ci=ci@entry=0x7ffd20584630, cc=cc@entry=0x7ffd20584660, argv=argv@entry=0x7fa98f8ca0b8) at vm_eval.c:127
#48 0x00007fa98ffba687 in vm_call0 (me=0x55fadffd1df0, argv=0x7fa98f8ca0b8, argc=1, id=3057, recv=94535990077160, ec=0x55fadf1c9418) at vm_eval.c:58
#49 rb_call0 (ec=0x55fadf1c9418, recv=recv@entry=94535990077160, mid=mid@entry=3057, argc=1, argc@entry=3057, argv=0x7fa98f8ca0b8, argv@entry=0x1, scope=scope@entry=CALL_FCALL, self=94535988092560) at vm_eval.c:296
#50 0x00007fa98ffbae6e in rb_call (scope=CALL_FCALL, argv=0x1, argc=3057, mid=3057, recv=94535990077160) at vm_eval.c:589
#51 rb_funcallv (recv=recv@entry=94535990077160, mid=mid@entry=3057, argc=argc@entry=1, argv=argv@entry=0x7fa98f8ca0b8) at vm_eval.c:815
#52 0x00007fa98fe90806 in rb_obj_call_init (obj=obj@entry=94535990077160, argc=argc@entry=1, argv=argv@entry=0x7fa98f8ca0b8) at eval.c:1590
#53 0x00007fa98fee6a51 in rb_class_s_new (argc=1, argv=0x7fa98f8ca0b8, klass=<optimized out>) at object.c:2152
#54 0x00007fa98ffab7a1 in vm_call_cfunc_with_frame (ci=0x55fadf5c8fb0, cc=<optimized out>, calling=<optimized out>, reg_cfp=0x7fa98f9c9fb0, ec=0x55fadf1c9418) at vm_insnhelper.c:1918
#55 vm_call_cfunc (ec=<optimized out>, reg_cfp=<optimized out>, calling=<optimized out>, ci=<optimized out>, cc=<optimized out>) at vm_insnhelper.c:1934
#56 0x00007fa98ffb938b in vm_call_method_each_type (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=<optimized out>, ec=<optimized out>) at vm_insnhelper.c:2381
#57 vm_call_method (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=<optimized out>, ec=<optimized out>) at vm_insnhelper.c:2381
#58 vm_call_method (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=0x7fa98f9c9fb0, ec=0x55fadf1c9418) at vm_insnhelper.c:2348
#59 vm_call_general (ec=0x55fadf1c9418, reg_cfp=0x7fa98f9c9fb0, calling=<optimized out>, ci=<optimized out>, cc=<optimized out>) at vm_insnhelper.c:2398
#60 0x00007fa98ffb1306 in vm_exec_core (ec=0x7fa9900a43a0 <exec_arg_data_type>, ec@entry=0x55fadf1c9418, initial=140366242792352, initial@entry=0) at insns.def:915
#61 0x00007fa98ffb4ef4 in vm_exec (ec=0x55fadf1c9418) at vm.c:1778
#62 0x00007fa98ffb61b7 in rb_iseq_eval_main (iseq=iseq@entry=0x55fadf45ba98) at vm.c:2026
#63 0x00007fa98fe8bf14 in ruby_exec_internal (n=0x55fadf45ba98) at eval.c:247
#64 0x00007fa98fe8ddbd in ruby_exec_node (n=<optimized out>, n@entry=0x55fadf45ba98) at eval.c:311
#65 0x00007fa98fe9026e in ruby_run_node (n=0x55fadf45ba98) at eval.c:303
#66 0x000055faddf1e0eb in main (argc=<optimized out>, argv=<optimized out>) at ./main.c:42

Thread 2 (Thread 0x7fa9900c8700 (LWP 22577)):
#0  0x00007fa98fabc819 in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa98ff87134 in timer_thread_sleep (gvl=0x55fadf1c8a58) at thread_pthread.c:1458
#2  thread_timer (p=0x55fadf1c8a58) at thread_pthread.c:1577
#3  0x00007fa98fdddfa3 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#4  0x00007fa98fac74cf in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 1 (Thread 0x7fa98f9cb740 (LWP 22575)):
#0  0x00007fa98faae917 in sched_yield () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa98ff87195 in native_stop_timer_thread () at thread_pthread.c:1695
#2  rb_thread_stop_timer_thread () at thread.c:4153
#3  0x00007fa98ff174ea in before_exec_non_async_signal_safe () at process.c:2605
#4  before_exec () at process.c:1194
#5  rb_f_exec (argc=<optimized out>, argv=<optimized out>) at process.c:2605
#6  0x00007fa98ffab7a1 in vm_call_cfunc_with_frame (ci=0x55fadfc6d120, cc=<optimized out>, calling=<optimized out>, reg_cfp=0x7fa98f9c9e90, ec=0x55fadf1c9418)
    at vm_insnhelper.c:1918
#7  vm_call_cfunc (ec=<optimized out>, reg_cfp=<optimized out>, calling=<optimized out>, ci=<optimized out>, cc=<optimized out>) at vm_insnhelper.c:1934
#8  0x00007fa98ffb938b in vm_call_method_each_type (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=<optimized out>, ec=<optimized out>)
    at vm_insnhelper.c:2381
#9  vm_call_method (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=<optimized out>, ec=<optimized out>) at vm_insnhelper.c:2381
#10 vm_call_method (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=0x7fa98f9c9e90, ec=0x55fadf1c9418) at vm_insnhelper.c:2348
#11 vm_call_general (ec=0x55fadf1c9418, reg_cfp=0x7fa98f9c9e90, calling=<optimized out>, ci=<optimized out>, cc=<optimized out>) at vm_insnhelper.c:2398
#12 0x00007fa98ffb1306 in vm_exec_core (ec=0x7fa9900a43a0 <exec_arg_data_type>, ec@entry=0x55fadf1c9418, initial=140366242792352, initial@entry=0) at insns.def:915
#13 0x00007fa98ffb4ef4 in vm_exec (ec=ec@entry=0x55fadf1c9418) at vm.c:1778
#14 0x00007fa98ffbbe89 in invoke_block (captured=<optimized out>, opt_pc=<optimized out>, type=<optimized out>, cref=<optimized out>, self=<optimized out>, iseq=<optimized out>, 
    ec=<optimized out>) at vm.c:979
#15 invoke_iseq_block_from_c (is_lambda=<optimized out>, cref=<optimized out>, passed_block_handler=<optimized out>, argv=<optimized out>, argc=<optimized out>, 
    self=<optimized out>, captured=<optimized out>, ec=<optimized out>) at vm.c:1031
#16 invoke_block_from_c_bh (force_blockarg=<optimized out>, is_lambda=<optimized out>, cref=<optimized out>, passed_block_handler=<optimized out>, argv=<optimized out>, 
    argc=<optimized out>, block_handler=<optimized out>, ec=<optimized out>) at vm.c:1049
#17 vm_yield (argv=<optimized out>, argc=<optimized out>, ec=<optimized out>) at vm.c:1094
#18 rb_yield_0 (argv=<optimized out>, argc=<optimized out>) at vm_eval.c:970
#19 rb_yield_1 (val=<optimized out>) at vm_eval.c:976
#20 rb_yield (val=val@entry=52) at vm_eval.c:986
#21 0x00007fa98fe8e991 in rb_protect (proc=0x7fa98ffbbb70 <rb_yield>, data=data@entry=52, pstate=pstate@entry=0x7ffd205834fc) at eval.c:996
#22 0x00007fa98ff17892 in rb_f_fork (obj=<optimized out>) at process.c:3707
#23 rb_f_fork (obj=<optimized out>) at process.c:3698
#24 0x00007fa98ffab7a1 in vm_call_cfunc_with_frame (ci=0x55fadf57fbb0, cc=<optimized out>, calling=<optimized out>, reg_cfp=0x7fa98f9c9ef0, ec=0x55fadf1c9418) at vm_insnhelper.c:1918
#25 vm_call_cfunc (ec=<optimized out>, reg_cfp=<optimized out>, calling=<optimized out>, ci=<optimized out>, cc=<optimized out>) at vm_insnhelper.c:1934
#26 0x00007fa98ffb938b in vm_call_method_each_type (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=<optimized out>, ec=<optimized out>) at vm_insnhelper.c:2381
#27 vm_call_method (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=<optimized out>, ec=<optimized out>) at vm_insnhelper.c:2381
#28 vm_call_method (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=0x7fa98f9c9ef0, ec=0x55fadf1c9418) at vm_insnhelper.c:2348
#29 vm_call_general (ec=0x55fadf1c9418, reg_cfp=0x7fa98f9c9ef0, calling=<optimized out>, ci=<optimized out>, cc=<optimized out>) at vm_insnhelper.c:2398
#30 0x00007fa98ffb0a5a in vm_exec_core (ec=0x7fa9900a43a0 <exec_arg_data_type>, ec@entry=0x55fadf1c9418, initial=140366242792352, initial@entry=0) at insns.def:850
#31 0x00007fa98ffb4ef4 in vm_exec (ec=ec@entry=0x55fadf1c9418) at vm.c:1778
#32 0x00007fa98ffb956a in vm_call0_body (ec=ec@entry=0x55fadf1c9418, calling=calling@entry=0x7ffd20583d40, ci=ci@entry=0x7ffd20583d30, cc=cc@entry=0x7ffd20583d60, argv=argv@entry=0x7fa98f8ca110) at vm_eval.c:127
#33 0x00007fa98ffba687 in vm_call0 (me=0x55fadfb8faa8, argv=0x7fa98f8ca110, argc=2, id=3057, recv=94535990077000, ec=0x55fadf1c9418) at vm_eval.c:58
#34 rb_call0 (ec=0x55fadf1c9418, recv=recv@entry=94535990077000, mid=mid@entry=3057, argc=2, argc@entry=3057, argv=0x7fa98f8ca110, argv@entry=0x2, scope=scope@entry=CALL_FCALL, self=94535983627760) at vm_eval.c:296
#35 0x00007fa98ffbae6e in rb_call (scope=CALL_FCALL, argv=0x2, argc=3057, mid=3057, recv=94535990077000) at vm_eval.c:589
#36 rb_funcallv (recv=recv@entry=94535990077000, mid=mid@entry=3057, argc=argc@entry=2, argv=argv@entry=0x7fa98f8ca110) at vm_eval.c:815
#37 0x00007fa98fe90806 in rb_obj_call_init (obj=obj@entry=94535990077000, argc=argc@entry=2, argv=argv@entry=0x7fa98f8ca110) at eval.c:1590
#38 0x00007fa98fee6a51 in rb_class_s_new (argc=2, argv=0x7fa98f8ca110, klass=<optimized out>) at object.c:2152
#39 0x00007fa98ffab7a1 in vm_call_cfunc_with_frame (ci=0x55fadfedf4e0, cc=<optimized out>, calling=<optimized out>, reg_cfp=0x7fa98f9c9f50, ec=0x55fadf1c9418) at vm_insnhelper.c:1918
#40 vm_call_cfunc (ec=<optimized out>, reg_cfp=<optimized out>, calling=<optimized out>, ci=<optimized out>, cc=<optimized out>) at vm_insnhelper.c:1934
#41 0x00007fa98ffb938b in vm_call_method_each_type (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=<optimized out>, ec=<optimized out>) at vm_insnhelper.c:2381
#42 vm_call_method (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=<optimized out>, ec=<optimized out>) at vm_insnhelper.c:2381
#43 vm_call_method (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=0x7fa98f9c9f50, ec=0x55fadf1c9418) at vm_insnhelper.c:2348
#44 vm_call_general (ec=0x55fadf1c9418, reg_cfp=0x7fa98f9c9f50, calling=<optimized out>, ci=<optimized out>, cc=<optimized out>) at vm_insnhelper.c:2398
#45 0x00007fa98ffb1306 in vm_exec_core (ec=0x7fa9900a43a0 <exec_arg_data_type>, ec@entry=0x55fadf1c9418, initial=140366242792352, initial@entry=0) at insns.def:915
#46 0x00007fa98ffb4ef4 in vm_exec (ec=ec@entry=0x55fadf1c9418) at vm.c:1778
#47 0x00007fa98ffb956a in vm_call0_body (ec=ec@entry=0x55fadf1c9418, calling=calling@entry=0x7ffd20584640, ci=ci@entry=0x7ffd20584630, cc=cc@entry=0x7ffd20584660, argv=argv@entry=0x7fa98f8ca0b8) at vm_eval.c:127
#48 0x00007fa98ffba687 in vm_call0 (me=0x55fadffd1df0, argv=0x7fa98f8ca0b8, argc=1, id=3057, recv=94535990077160, ec=0x55fadf1c9418) at vm_eval.c:58
#49 rb_call0 (ec=0x55fadf1c9418, recv=recv@entry=94535990077160, mid=mid@entry=3057, argc=1, argc@entry=3057, argv=0x7fa98f8ca0b8, argv@entry=0x1, scope=scope@entry=CALL_FCALL, self=94535988092560) at vm_eval.c:296
#50 0x00007fa98ffbae6e in rb_call (scope=CALL_FCALL, argv=0x1, argc=3057, mid=3057, recv=94535990077160) at vm_eval.c:589
#51 rb_funcallv (recv=recv@entry=94535990077160, mid=mid@entry=3057, argc=argc@entry=1, argv=argv@entry=0x7fa98f8ca0b8) at vm_eval.c:815
#52 0x00007fa98fe90806 in rb_obj_call_init (obj=obj@entry=94535990077160, argc=argc@entry=1, argv=argv@entry=0x7fa98f8ca0b8) at eval.c:1590
#53 0x00007fa98fee6a51 in rb_class_s_new (argc=1, argv=0x7fa98f8ca0b8, klass=<optimized out>) at object.c:2152
#54 0x00007fa98ffab7a1 in vm_call_cfunc_with_frame (ci=0x55fadf5c8fb0, cc=<optimized out>, calling=<optimized out>, reg_cfp=0x7fa98f9c9fb0, ec=0x55fadf1c9418) at vm_insnhelper.c:1918
#55 vm_call_cfunc (ec=<optimized out>, reg_cfp=<optimized out>, calling=<optimized out>, ci=<optimized out>, cc=<optimized out>) at vm_insnhelper.c:1934
#56 0x00007fa98ffb938b in vm_call_method_each_type (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=<optimized out>, ec=<optimized out>) at vm_insnhelper.c:2381
#57 vm_call_method (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=<optimized out>, ec=<optimized out>) at vm_insnhelper.c:2381
#58 vm_call_method (cc=<optimized out>, ci=<optimized out>, calling=<optimized out>, cfp=0x7fa98f9c9fb0, ec=0x55fadf1c9418) at vm_insnhelper.c:2348
#59 vm_call_general (ec=0x55fadf1c9418, reg_cfp=0x7fa98f9c9fb0, calling=<optimized out>, ci=<optimized out>, cc=<optimized out>) at vm_insnhelper.c:2398
#60 0x00007fa98ffb1306 in vm_exec_core (ec=0x7fa9900a43a0 <exec_arg_data_type>, ec@entry=0x55fadf1c9418, initial=140366242792352, initial@entry=0) at insns.def:915
#61 0x00007fa98ffb4ef4 in vm_exec (ec=0x55fadf1c9418) at vm.c:1778
#62 0x00007fa98ffb61b7 in rb_iseq_eval_main (iseq=iseq@entry=0x55fadf45ba98) at vm.c:2026
#63 0x00007fa98fe8bf14 in ruby_exec_internal (n=0x55fadf45ba98) at eval.c:247
#64 0x00007fa98fe8ddbd in ruby_exec_node (n=<optimized out>, n@entry=0x55fadf45ba98) at eval.c:311
#65 0x00007fa98fe9026e in ruby_run_node (n=0x55fadf45ba98) at eval.c:303
#66 0x000055faddf1e0eb in main (argc=<optimized out>, argv=<optimized out>) at ./main.c:42
Detaching from program: /usr/bin/ruby2.5, process 22575
[Inferior 1 (process 22575) detached]