tool.drcachesim.delay-global failed on AArch64

tool.drcachesim.delay-global failed on AArch64 on commit 06db371 in PR #5157.

It seems that the test died midway iteration 2?

```
54/54 Test #175: code_api|tool.drcachesim.delay-global ...........................***Failed Required regular expression not found. Regex=[^Hit delay threshold: enabling tracing.
Hit -max_global_trace_refs: disabling tracing.
.*
Total Number Of iterations : 3
...................................................................
---- ----
Basic counts tool results:
Total counts:
.*
1 total threads
.*
$
] 90.00 sec
Hit delay threshold: enabling tracing.
Hit -max_global_trace_refs: disabling tracing.

-------------------------------------------------------------------
Performance for solving AX=B Linear Equation using Jacobi method
Running on DynamoRIO
Client version (null)
...................................................................

Matrix Size : 64
Threads : 4

Started iteration 1 of the computation...

Finished computing current solution distance in mode 0.
Mode changed to 0.

Started iteration 2 of the computation...

96% tests passed, 2 tests failed out of 54
```

http://139.178.84.19:8080/job/DynamoRIO-AArch64-Precommit/806/consoleFull