nes below might hint at the cause of the crash.
You may get help by asking at the ROOT forum http://root.cern.ch/forum
Only if you are really convinced it is a bug in ROOT then please submit a
report at http://root.cern.ch/bugs Please post the ENTIRE stack trace
from above as an attachment in addition to anything else
that might help us fixing this issue.
===========================================================
#5  0x00007f4b45d0444c in PyObject_SetAttr (v=0x0, name=0x7f4b3e635a70, value=0x7f4b3e6c14b0) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Objects/object.c:924
#6  0x00007f4b3dd6d675 in PyROOT::CreateScopeProxy(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, _object*) () from /cvmfs/sft-nightlies.cern.ch/lcg/views/dev3python3/Fri/x86_64-centos7-gcc8-opt/lib/libPyROOT.so
#7  0x00007f4b3dd6db08 in PyROOT::CreateScopeProxy(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, _object*) () from /cvmfs/sft-nightlies.cern.ch/lcg/views/dev3python3/Fri/x86_64-centos7-gcc8-opt/lib/libPyROOT.so
#8  0x00007f4b3dd6a2bf in (anonymous namespace)::LookupCppEntity(_object*, _object*) () from /cvmfs/sft-nightlies.cern.ch/lcg/views/dev3python3/Fri/x86_64-centos7-gcc8-opt/lib/libPyROOT.so
#9  0x00007f4b45d0175b in _PyCFunction_FastCallDict (func_obj=0x7f4b3e72bbd0, args=0x24a5f78, nargs=<optimized out>, kwargs=kwargs
entry=0x0) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Objects/methodobject.c:234
#10 0x00007f4b45d019c3 in _PyCFunction_FastCallKeywords (func=func
entry=0x7f4b3e72bbd0, stack=<optimized out>, nargs=nargs
entry=1, kwnames=kwnames
entry=0x0) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Objects/methodobject.c:294
#11 0x00007f4b45d8dc84 in call_function (pp_stack=pp_stack
entry=0x7fff241a1a60, oparg=<optimized out>, kwnames=kwnames
entry=0x0) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Python/ceval.c:4824
#12 0x00007f4b45d8f537 in _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Python/ceval.c:3322
#13 0x00007f4b45d8cd63 in _PyFunction_FastCall (co=co
entry=0x7f4b3e63c6f0, args=<optimized out>, args
entry=0x7fff241a1c00, nargs=nargs
entry=2, globals=globals
entry=0x7f4b3e670f30) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Python/ceval.c:4906
#14 0x00007f4b45d96273 in _PyFunction_FastCallDict (func=func
entry=0x7f4b3e6b3378, args=args
entry=0x7fff241a1c00, nargs=nargs
entry=2, kwargs=kwargs
entry=0x0) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Python/ceval.c:5008
#15 0x00007f4b45cab6e1 in _PyObject_FastCallDict (func=func
entry=0x7f4b3e6b3378, args=args
entry=0x7fff241a1c00, nargs=nargs
entry=2, kwargs=kwargs
entry=0x0) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Objects/abstract.c:2310
#16 0x00007f4b45cab91d in _PyObject_Call_Prepend (func=0x7f4b3e6b3378, obj=<optimized out>, args=0x7f4b3e666b00, kwargs=0x0) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Objects/abstract.c:2373
#17 0x00007f4b45cab639 in _PyObject_FastCallDict (func=func
entry=0x7f4b462e99c8, args=args
entry=0x7fff241a1cf0, nargs=1, kwargs=kwargs
entry=0x0) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Objects/abstract.c:2331
#18 0x00007f4b45cac732 in PyObject_CallFunctionObjArgs (callable=callable
entry=0x7f4b462e99c8) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Objects/abstract.c:2827
#19 0x00007f4b45d1e07d in call_attribute (name=0x7f4b3e732630, attr=0x7f4b462e99c8, self=0x39c8bd8) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Objects/typeobject.c:6230
#20 slot_tp_getattr_hook (self=0x39c8bd8, name=0x7f4b3e732630) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Objects/typeobject.c:6272
#21 0x00007f4b45d8fbe0 in _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Python/ceval.c:2859
#22 0x00007f4b45d8d78f in _PyEval_EvalCodeWithName (_co=_co
entry=0x7f4b461fa270, globals=globals
entry=0x7f4b462b02d0, locals=locals
entry=0x7f4b462b02d0, args=args
entry=0x0, argcount=argcount
entry=0, kwnames=kwnames
entry=0x0, kwargs=0x0, kwcount=0, kwstep=2, defs=0x0, defcount=0, kwdefs=0x0, closure=0x0, name=0x0, qualname=0x0) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Python/ceval.c:4153
#23 0x00007f4b45d8ddae in PyEval_EvalCodeEx (_co=_co
entry=0x7f4b461fa270, globals=globals
entry=0x7f4b462b02d0, locals=locals
entry=0x7f4b462b02d0, args=args
entry=0x0, argcount=argcount
entry=0, kws=kws
entry=0x0, kwcount=0, defs=0x0, defcount=0, kwdefs=0x0, closure=0x0) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Python/ceval.c:4174
#24 0x00007f4b45d8dddb in PyEval_EvalCode (co=co
entry=0x7f4b461fa270, globals=globals
entry=0x7f4b462b02d0, locals=locals
entry=0x7f4b462b02d0) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Python/ceval.c:730
#25 0x00007f4b45dbf2ef in run_mod (arena=0x7f4b462c92d0, flags=0x7fff241a220c, locals=0x7f4b462b02d0, globals=0x7f4b462b02d0, filename=0x7f4b46225570, mod=0x2506888) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Python/pythonrun.c:1025
#26 PyRun_InteractiveOneObjectEx (fp=fp
entry=0x7f4b4530e640 <_IO_2_1_stdin_>, filename=filename
entry=0x7f4b46225570, flags=flags
entry=0x7fff241a220c) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Python/pythonrun.c:246
#27 0x00007f4b45dbf566 in PyRun_InteractiveLoopFlags (fp=fp
entry=0x7f4b4530e640 <_IO_2_1_stdin_>, filename_str=filename_str
entry=0x7f4b45e5611d "<stdin>", flags=flags
entry=0x7fff241a220c) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Python/pythonrun.c:114
#28 0x00007f4b45dbfd4e in PyRun_AnyFileExFlags (fp=fp
entry=0x7f4b4530e640 <_IO_2_1_stdin_>, filename=filename
entry=0x7f4b45e5611d "<stdin>", closeit=closeit
entry=0, flags=flags
entry=0x7fff241a220c) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Python/pythonrun.c:75
#29 0x00007f4b45dd8466 in run_file (p_cf=0x7fff241a220c, filename=0x0, fp=<optimized out>) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Modules/main.c:340
#30 Py_Main (argc=argc
entry=1, argv=argv
entry=0x23f2010) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Modules/main.c:810
#31 0x0000000000400b16 in main (argc=1, argv=<optimized out>) at /mnt/build/jenkins/workspace/lcg_release_latest/BUILDTYPE/Release/COMPILER/gcc8binutils/LABEL/centos7/build/externals/Python-3.6.5/src/Python/3.6.5/Programs/python.c:69
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