#0  0x00007ffff76692c5 in raise () from /usr/lib/libc.so.6
#1  0x00007ffff766a748 in abort () from /usr/lib/libc.so.6
#2  0x00007ffff6118229 in Tcl_PanicVA (format=<optimized out>, 
    argList=argList@entry=0x7fffffffd748)
    at /home/sean/tmp/tcl/src/tcl8.6.0/generic/tclPanic.c:119
#3  0x00007ffff61182be in Tcl_Panic (
    format=format@entry=0x7ffff6174f5a "called %s on deleted table")
    at /home/sean/tmp/tcl/src/tcl8.6.0/generic/tclPanic.c:149
#4  0x00007ffff60ef47d in BogusFind (tablePtr=<optimized out>, 
    key=<optimized out>)
    at /home/sean/tmp/tcl/src/tcl8.6.0/generic/tclHash.c:961
#5  0x00007ffff60d754a in NsEnsembleImplementationCmdNR (
    clientData=<optimized out>, interp=interp@entry=0xfbb4e0, objc=2, 
    objv=0xfcdfb0)
    at /home/sean/tmp/tcl/src/tcl8.6.0/generic/tclEnsemble.c:1719
#6  0x00007ffff608056a in Tcl_NRCallObjProc (interp=0xfbb4e0, 
    objProc=objProc@entry=0x7ffff60d6e81 <NsEnsembleImplementationCmdNR>, 
    clientData=<optimized out>, objc=<optimized out>, objv=<optimized out>)
    at /home/sean/tmp/tcl/src/tcl8.6.0/generic/tclBasic.c:8150
#7  0x00007ffff60d6d3b in NsEnsembleImplementationCmd (
    clientData=<optimized out>, interp=<optimized out>, objc=<optimized out>, 
    objv=<optimized out>)
    at /home/sean/tmp/tcl/src/tcl8.6.0/generic/tclEnsemble.c:1616
#8  0x00007ffff63c028e in ip_rbNamespaceObjCmd (clientData=<optimized out>, 
    interp=0xfbb4e0, objc=2, objv=0xfcdfb0) at tcltklib.c:6038
#9  0x00007ffff63bb36f in invoke_tcl_proc (arg=arg@entry=140737488346416)
    at tcltklib.c:8507
#10 0x00007ffff7a3980c in rb_protect (
    proc=proc@entry=0x7ffff63bb2c8 <invoke_tcl_proc>, 
    data=data@entry=140737488346416, state=state@entry=0x7fffffffdcec)
    at eval.c:719
#11 0x00007ffff63bcc5b in ip_invoke_core (interp=interp@entry=16441160, 
    objc=objc@entry=2, objv=objv@entry=0xfcdfb0) at tcltklib.c:8676
#12 0x00007ffff63bd1de in ip_invoke_real (interp=16441160, 
    argv=<optimized out>, argc=2) at tcltklib.c:8951
#13 ip_invoke_with_position (argc=2, argv=<optimized out>, obj=16441160, 
    position=position@entry=TCL_QUEUE_TAIL) at tcltklib.c:9125
#14 0x00007ffff63bd732 in ip_invoke (argc=<optimized out>, 
    argv=<optimized out>, obj=<optimized out>) at tcltklib.c:9275
#15 0x00007ffff7b0d8ee in call_cfunc (func=0x7ffff63bd724 <ip_invoke>, 
    recv=recv@entry=16441160, len=<optimized out>, argc=argc@entry=2, 
    argv=<optimized out>) at vm_insnhelper.c:317
#16 0x00007ffff7b1b6b7 in vm_call_cfunc (me=0xf29550, blockptr=0x0, 
    recv=<optimized out>, num=2, reg_cfp=0x7ffff6ad5ca0, th=0x603520)
    at vm_insnhelper.c:404
#17 vm_call_method (th=th@entry=0x603520, cfp=cfp@entry=0x7ffff6ad5ca0, 
    num=num@entry=2, blockptr=0x0, flag=flag@entry=0, id=id@entry=14776, 
    me=0xf29550, recv=recv@entry=16441160) at vm_insnhelper.c:530
#18 0x00007ffff7b12c1b in vm_exec_core (th=th@entry=0x603520, 
    initial=initial@entry=0) at insns.def:1018
#19 0x00007ffff7b16b9f in vm_exec (th=0x603520) at vm.c:1236
#20 0x00007ffff7b1d767 in rb_iseq_eval (iseqval=6591280) at vm.c:1464
#21 0x00007ffff7a3b056 in rb_load_internal (fname=8784560, wrap=wrap@entry=0)
    at load.c:310
#22 0x00007ffff7a3c275 in rb_require_safe (fname=8785360, fname@entry=8785520, 
    safe=0) at load.c:620
#23 0x00007ffff7a3c42b in rb_f_require (obj=<optimized out>, fname=8785520)
    at load.c:466
#24 0x00007ffff7b0d912 in call_cfunc (func=0x7ffff7a3c418 <rb_f_require>, 
    recv=recv@entry=6711040, len=<optimized out>, argc=argc@entry=1, 
    argv=<optimized out>) at vm_insnhelper.c:323
#25 0x00007ffff7b1b6b7 in vm_call_cfunc (me=0x8597f0, blockptr=0x0, 
    recv=<optimized out>, num=1, reg_cfp=0x7ffff6ad5eb0, th=0x603520)
    at vm_insnhelper.c:404
#26 vm_call_method (th=th@entry=0x603520, cfp=cfp@entry=0x7ffff6ad5eb0, 
    num=num@entry=1, blockptr=0x0, flag=flag@entry=8, id=id@entry=14504, 
    me=0x8597f0, recv=recv@entry=6711040) at vm_insnhelper.c:530
#27 0x00007ffff7b12c1b in vm_exec_core (th=th@entry=0x603520, 
    initial=initial@entry=0) at insns.def:1018
#28 0x00007ffff7b16b9f in vm_exec (th=th@entry=0x603520) at vm.c:1236
#29 0x00007ffff7b1d837 in rb_iseq_eval_main (iseqval=iseqval@entry=8786160)
    at vm.c:1478
#30 0x00007ffff7a38e1d in ruby_exec_internal (n=0x8610f0) at eval.c:204
#31 0x00007ffff7a39226 in ruby_exec_node (n=n@entry=0x8610f0) at eval.c:251
#32 0x00007ffff7a3aa06 in ruby_run_node (n=0x8610f0) at eval.c:244
#33 0x000000000040099a in main (argc=2, argv=0x7fffffffe9a8) at main.c:38
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