Ext buil error: error: pack expansion does not make use of any argument packs

I got the following error building Apex.

` running build_ext
building 'apex_C' extension
creating build/temp.linux-x86_64-3.6
creating build/temp.linux-x86_64-3.6/csrc
gcc -pthread -B /data/sls/scratch/hyluo/anaconda3/envs/LSP/compiler_compat -Wl,--sysroot=/ -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I/data/sls/scratch/hyluo/anaconda3/envs/L
SP/lib/python3.6/site-packages/torch/include -I/data/sls/scratch/hyluo/anaconda3/envs/LSP/lib/python3.6/site-packages/torch/include/torch/csrc/api/include -I/data/sls/scratch/hyluo/anaconda3/envs/LSP/lib/pyth
on3.6/site-packages/torch/include/TH -I/data/sls/scratch/hyluo/anaconda3/envs/LSP/lib/python3.6/site-packages/torch/include/THC -I/data/sls/scratch/hyluo/anaconda3/envs/LSP/include/python3.6m -c csrc/flatten_
unflatten.cpp -o build/temp.linux-x86_64-3.6/csrc/flatten_unflatten.o -DTORCH_API_INCLUDE_EXTENSION_H -DTORCH_EXTENSION_NAME=apex_C -D_GLIBCXX_USE_CXX11_ABI=0 -std=c++11
cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
g++ -pthread -shared -B /data/sls/scratch/hyluo/anaconda3/envs/LSP/compiler_compat -L/data/sls/scratch/hyluo/anaconda3/envs/LSP/lib -Wl,-rpath=/data/sls/scratch/hyluo/anaconda3/envs/LSP/lib -Wl,--no-as-ne
eded -Wl,--sysroot=/ build/temp.linux-x86_64-3.6/csrc/flatten_unflatten.o -o build/lib.linux-x86_64-3.6/apex_C.cpython-36m-x86_64-linux-gnu.so
building 'amp_C' extension
gcc -pthread -B /data/sls/scratch/hyluo/anaconda3/envs/LSP/compiler_compat -Wl,--sysroot=/ -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I/data/sls/scratch/hyluo/anaconda3/envs/L
SP/lib/python3.6/site-packages/torch/include -I/data/sls/scratch/hyluo/anaconda3/envs/LSP/lib/python3.6/site-packages/torch/include/torch/csrc/api/include -I/data/sls/scratch/hyluo/anaconda3/envs/LSP/lib/pyth
on3.6/site-packages/torch/include/TH -I/data/sls/scratch/hyluo/anaconda3/envs/LSP/lib/python3.6/site-packages/torch/include/THC -I/data/sls/scratch/share-201907/opt/cuda/include -I/data/sls/scratch/hyluo/anac
onda3/envs/LSP/include/python3.6m -c csrc/amp_C_frontend.cpp -o build/temp.linux-x86_64-3.6/csrc/amp_C_frontend.o -O3 -DTORCH_API_INCLUDE_EXTENSION_H -DTORCH_EXTENSION_NAME=amp_C -D_GLIBCXX_USE_CXX11_ABI=0 -s
td=c++11
cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
/data/sls/scratch/share-201907/opt/cuda/bin/nvcc -I/data/sls/scratch/hyluo/anaconda3/envs/LSP/lib/python3.6/site-packages/torch/include -I/data/sls/scratch/hyluo/anaconda3/envs/LSP/lib/python3.6/site-pack
ages/torch/include/torch/csrc/api/include -I/data/sls/scratch/hyluo/anaconda3/envs/LSP/lib/python3.6/site-packages/torch/include/TH -I/data/sls/scratch/hyluo/anaconda3/envs/LSP/lib/python3.6/site-packages/tor
ch/include/THC -I/data/sls/scratch/share-201907/opt/cuda/include -I/data/sls/scratch/hyluo/anaconda3/envs/LSP/include/python3.6m -c csrc/multi_tensor_scale_kernel.cu -o build/temp.linux-x86_64-3.6/csrc/multi_
tensor_scale_kernel.o -D__CUDA_NO_HALF_OPERATORS__ -D__CUDA_NO_HALF_CONVERSIONS__ -D__CUDA_NO_HALF2_OPERATORS__ --expt-relaxed-constexpr --compiler-options '-fPIC' -lineinfo -O3 --use_fast_math -DTORCH_API_IN
CLUDE_EXTENSION_H -DTORCH_EXTENSION_NAME=amp_C -D_GLIBCXX_USE_CXX11_ABI=0 -gencode=arch=compute_75,code=sm_75 -std=c++11
/data/sls/scratch/share-201907/include/c++/8.3.0/utility(307): error: pack expansion does not make use of any argument packs

/data/sls/scratch/hyluo/anaconda3/envs/LSP/lib/python3.6/site-packages/torch/include/c10/core/TensorTypeSet.h(44): warning: integer conversion resulted in a change of sign

1 error detected in the compilation of "/tmp/tmpxft_000067fe_00000000-6_multi_tensor_scale_kernel.cpp1.ii".
error: command '/data/sls/scratch/share-201907/opt/cuda/bin/nvcc' failed with exit status 1

Running setup.py install for apex ... error`

I wonder what caused this and if anyone had faced the same issue.

Start by reading csrc/multi_tensor_scale_kernel.cu and the build configuration invoked by setup.py install. Reproduce the build with the reported Python, PyTorch, CUDA, GCC and nvcc environment, then compare the failing include and compiler versions. Done would require a documented cause and a successful Apex extension build, but the issue does not define a specific fix.