pkg/vm_service/test/get_allocation_traces_test is flaky

[dcharkes]

The tests

pkg/vm_service/test/get_allocation_traces_test RuntimeError (expected Pass)

are failing on configurations

vm-linux-debug-ia32

And it's also flaky in release mode.

https://dart-current-results.web.app/#/filter=pkg/vm_service/test/get_allocation_traces_test&showAll

--- Command "vm" (took 01:41.000586s):
DART_CONFIGURATION=DebugIA32 out/DebugIA32/dart --sound-null-safety -Dtest_runner.configuration=vm-linux-debug-ia32 --ignore-unrecognized-flags --packages=/b/s/w/ir/.dart_tool/package_config.json /b/s/w/ir/pkg/vm_service/test/get_allocation_traces_test.dart

exit code:
255

stdout:
00:00 �[32m+0�[0m: get_allocation_traces_test.dart�[0m

** Launching SERVICE_TEST_TESTEE=true out/DebugIA32/dart --disable-service-auth-codes --profiler --sound-null-safety -Dtest_runner.configuration=vm-linux-debug-ia32 --ignore-unrecognized-flags --packages=/b/s/w/ir/.dart_tool/package_config.json --enable-vm-service:0 /b/s/w/ir/pkg/vm_service/test/get_allocation_traces_test.dart

>testee>out> The Dart VM service is listening on http://127.0.0.1:40519/
>testee>out> The Dart DevTools debugger and profiler is available at: http://127.0.0.1:40519/devtools?uri=ws://127.0.0.1:40519/ws
** Signaled to run test queries on http://127.0.0.1:40519/

>testee>out> 
Done loading VM

get_allocation_traces_test.dart [1/11]

get_allocation_traces_test.dart [2/11]

Checking we are at line 27

Program is stopped at line: 27

get_allocation_traces_test.dart [3/11]

get_allocation_traces_test.dart [4/11]

>testee>out> Foo
>testee>out> Bar
get_allocation_traces_test.dart [5/11]

get_allocation_traces_test.dart [6/11]

Checking we are at line 34

Program is stopped at line: 34

get_allocation_traces_test.dart [7/11]

[[CpuSample tid: 109518, timestamp: 41187719687, stack: [342, 331, 292, 285, 278, 270]]]

Allocation tracing enabled for Bar

get_allocation_traces_test.dart [8/11]

>testee>out> Bar
get_allocation_traces_test.dart [9/11]

get_allocation_traces_test.dart [10/11]

Checking we are at line 37

Program is stopped at line: 37

get_allocation_traces_test.dart [11/11]

Foo ID: classes/1192

Bar ID: classes/1193

Sample for CID: 1193

0: file:///b/s/w/ir/pkg/vm_service/test/get_allocation_traces_test.dart:25

1: file:///b/s/w/ir/pkg/vm_service/test/common/test_helper.dart:50

2: file:///b/s/w/ir/pkg/vm_service/test/common/test_helper.dart:392

3: file:///b/s/w/ir/pkg/vm_service/test/get_allocation_traces_test.dart:142

4: dart:isolate-patch/isolate_patch.dart:289

5: dart:isolate-patch/isolate_patch.dart:175

00:59 �[32m+0�[0m�[31m -1�[0m: get_allocation_traces_test.dart �[1m�[31m[E]�[0m�[0m

  Expected: <2>
    Actual: <1>
  

  package:matcher/src/expect/expect.dart 149:31              fail
  package:matcher/src/expect/expect.dart 144:3               _expect
  package:matcher/src/expect/expect.dart 56:3                expect
  pkg/vm_service/test/get_allocation_traces_test.dart 138:5  tests.<fn>
  ===== asynchronous gap ===========================
  pkg/vm_service/test/common/test_helper.dart 331:13         _ServiceTesterRunner.run.<fn>
  ===== asynchronous gap ===========================
  package:test_api/src/backend/declarer.dart 215:9           Declarer.test.<fn>.<fn>
  ===== asynchronous gap ===========================
  package:test_api/src/backend/declarer.dart 213:7           Declarer.test.<fn>
  ===== asynchronous gap ===========================
  package:test_api/src/backend/invoker.dart 258:9            Invoker._waitForOutstandingCallbacks.<fn>
  

All service tests completed successfully.

** Killing script

00:59 �[32m+0�[0m�[31m -1�[0m: �[31mSome tests failed.�[0m



Consider enabling the flag chain-stack-traces to receive more detailed exceptions.
For example, 'dart test --chain-stack-traces'.

stderr:
Unhandled exception:
Dummy exception to set exit code.

--- Re-run this test:
python3 tools/test.py -n vm-linux-debug-ia32 pkg/vm_service/test/get_allocation_traces_test

[bkonyi]

This is a tricky one, I'm unable to reproduce in release or debug mode when running against an IA32 build on Linux, even under load.

[bkonyi]

Left this running overnight to try and catch a failure with no luck.

[bkonyi]

There's a history of this test flaking with the above error on all configurations (see #51487), so I don't think this is solely an IA32 issue.