Fluid with distribution cannot save models rightly

[seiriosPlus]

The error detail is :

*** Aborted at 1523433319 (unix time) try "date -d @1523433319" if you are using GNU date ***
PC: @                0x0 (unknown)
*** SIGSEGV (@0x0) received by PID 2295 (TID 0x7f3f02d31700) from PID 0; stack trace: ***
    @     0x7f3f0270d390 (unknown)
    @     0x7f3eafc16612 _ZZN8pybind1112cpp_function10initializeIZN6paddle6pybind11BindVarDsecERNS_6moduleEEUlRNS2_9framework7VarDescEE_NS_5bytesEJS8_EJNS_4nameENS_9is_methodENS_7siblingENS_19return_value_policyEEEEvOT_PFT0_DpT1_EDpRKT2_ENUlRNS_6detail13function_callEE1_4_FUNESS_
    @     0x7f3eafbdec54 pybind11::cpp_function::dispatcher()
    @           0x4c37ed PyEval_EvalFrameEx
    @           0x4b9ab6 PyEval_EvalCodeEx
    @           0x4d54b9 (unknown)
    @           0x4a5371 PyObject_CallFunction
    @           0x41cdd7 _PyObject_GenericGetAttrWithDict
    @           0x4bc24b PyEval_EvalFrameEx
    @           0x4c136f PyEval_EvalFrameEx
    @           0x4b9ab6 PyEval_EvalCodeEx
    @           0x4c16e7 PyEval_EvalFrameEx
    @           0x4b9ab6 PyEval_EvalCodeEx
    @           0x4c16e7 PyEval_EvalFrameEx
    @           0x4b9ab6 PyEval_EvalCodeEx
    @           0x4c16e7 PyEval_EvalFrameEx
    @           0x4b9ab6 PyEval_EvalCodeEx
    @           0x4c16e7 PyEval_EvalFrameEx
    @           0x4b9ab6 PyEval_EvalCodeEx
    @           0x4eb30f (unknown)
    @           0x4e5422 PyRun_FileExFlags
    @           0x4e3cd6 PyRun_SimpleFileExFlags
    @           0x493ae2 Py_Main
    @     0x7f3f02352830 __libc_start_main
    @           0x4933e9 _start
    @                0x0 (unknown)

Source Code: https://github.com/seiriosPlus/fluid_benchmark/blob/master/image_classification/se_resnext_cluster.py
Env: Docker
PaddlePaddle: cpu-latest

[seiriosPlus]

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