Failed Tests

The following tests (below) fail when `make test` is run on [Arrayfire 3.7.1](https://github.com/arrayfire/arrayfire/releases/tag/v3.7.1). I have installed the required dependencies as shown [here](https://github.com/arrayfire/arrayfire/wiki/Build-Instructions-for-Linux#cuda-backend-dependencies). Why are these tests failing?

```bash

The following tests FAILED:
320 - test_sparse_arith_cpu (Failed)
321 - test_sparse_arith_cuda (Failed)
322 - test_sparse_arith_opencl (Failed)
380 - test_matrixmarket_cpu (Failed)
381 - test_matrixmarket_cuda (Failed)
382 - test_matrixmarket_opencl (Failed)
ArrayFire v3.7.1 (OpenCL, 64-bit Linux, build default)
[0] NVIDIA: Tesla T4, 15079 MB
Errors while running CTest
Makefile:149: recipe for target 'test' failed
make: *** [test] Error 8

```

Start by reproducing the failure with `make test` against ArrayFire 3.7.1 and inspect the six named CTest cases: `test_sparse_arith_*` and `test_matrixmarket_*`. The issue does not include the individual test errors, so determine the failure output and whether the cause is shared across CPU, CUDA, and OpenCL; done means the cause is documented and the affected tests pass.

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