Cannot install PyTorch on jetson nano for python 3.9

Getting this error while trying to build using this solution. Tried to increase swap memory using this but didnt help same issue again

make[2]: *** [caffe2/CMakeFiles/torch_cuda.dir/__/aten/src/ATen/native/sparse/cuda/torch_cuda_generated_SoftMax.cu.o] Hangup
caffe2/CMakeFiles/torch_cuda.dir/build.make:59881: recipe for target 'caffe2/CMakeFiles/torch_cuda.dir/__/aten/src/ATen/native/sparse/cuda/torch_cuda_generated_SparseCUDATensor.cu.o' failed
make[2]: *** [caffe2/CMakeFiles/torch_cuda.dir/__/aten/src/ATen/native/sparse/cuda/torch_cuda_generated_SparseCUDATensor.cu.o] Hangup
CMakeFiles/Makefile2:5757: recipe for target 'caffe2/CMakeFiles/torch_cuda.dir/all' failed
make[1]: *** [caffe2/CMakeFiles/torch_cuda.dir/all] Hangup
Makefile:145: recipe for target 'all' failed
make: *** [all] Hangup
SIGHUP
CMake Error: Generator: execution of make failed. Make command was: /usr/bin/make -f Makefile -j 4 install && 
Building wheel torch-1.7.0a0
-- Building version 1.7.0a0
cmake --build . --target install --config Release -- -j 4
Traceback (most recent call last):
  File "setup.py", line 727, in <module>
    build_deps()
  File "setup.py", line 314, in build_deps
    build_caffe2(version=version,
  File "/home/rithvik/pytorch/tools/build_pytorch_libs.py", line 62, in build_caffe2
    cmake.build(my_env)
  File "/home/rithvik/pytorch/tools/setup_helpers/cmake.py", line 346, in build
    self.run(build_args, my_env)
  File "/home/rithvik/pytorch/tools/setup_helpers/cmake.py", line 141, in run
    check_call(command, cwd=self.build_dir, env=env)
  File "/usr/lib/python3.8/subprocess.py", line 364, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['cmake', '--build', '.', '--target', 'install', '--config', 'Release', '--', '-j', '4']' returned non-zero exit status 1.