🧑‍🌾 test_multi_nested_message_introspection flaky test in windows repeated

[Crola1702]

Bug report

Required Info:

• Operating System:
  • Windows 10
• Installation type:
  • Source
• Version or commit hash:
  • Rolling
• DDS implementation:
  • (whichever DDS Implementation is used in repeated CI)
• Client library (if applicable):
  • N/A

Steps to reproduce issue

1. Run a build in nightly_win_rep
2. See tests fail

Additional information

Reference build: https://ci.ros2.org/view/nightly/job/nightly_win_rep/3235/

Test regressions:

• projectroot.test_multi_nested_message_introspection
• rosidl_typesupport_introspection_tests.MultiNestedMessageIntrospectionTest/0.CanWriteTypeErasedMessage

Log output:

C:\ci\ws\src\ros2\rosidl\rosidl_typesupport_introspection_tests\test\test_multi_nested_message_introspection.cpp:214
Expected equality of these values:
  item_reference
    Which is: 736-byte object <50-01 0E-15 A1-01 00-00 C0-FB E1-AB A1-01 00-00 0B-00 00-00 00-00 00-00 FC-A8 F7-E1 00-00 00-00 3D-00 00-00 00-00 00-00 D0-8B 11-15 A1-01 00-00 00-00 00-00 00-00 00-E0 00-00 00-00 00-00 00-00 ... 01-00 00-00 00-00 00-00 20-EA 11-15 A1-01 00-00 09-00 00-00 00-00 00-00 0A-00 00-00 00-00 00-00 20-E6 11-15 A1-01 00-00 09-00 00-00 00-00 00-00 0A-00 00-00 00-00 00-00 65-00 00-00 FF-7F 00-00>
  message.array_of_arrays[i]
    Which is: 736-byte object <50-01 0E-15 A1-01 00-00 C0-78 11-15 A1-01 00-00 0B-00 00-00 00-00 00-00 FC-A8 F7-E1 00-00 00-00 3D-00 00-00 00-00 00-00 D0-8B 11-15 A1-01 00-00 00-00 00-00 00-00 00-E0 00-00 00-00 00-00 00-00 ... 01-00 00-00 00-00 00-00 20-54 10-15 A1-01 00-00 09-00 00-00 00-00 00-00 0A-00 00-00 00-00 00-00 A0-54 10-15 A1-01 00-00 09-00 00-00 00-00 00-00 0A-00 00-00 00-00 00-00 65-00 00-00 00-00 00-00>

C:\ci\ws\src\ros2\rosidl\rosidl_typesupport_introspection_tests\test\test_multi_nested_message_introspection.cpp:214
Expected equality of these values:
  item_reference
    Which is: 736-byte object <00-00 00-00 00-00 00-00 0A-FB E1-AB 00-2C 00-80 6F-12 83-C0 CA-21 09-40 00-00 00-00 00-00 00-00 6F-12 83-C0 CA-21 09-C0 04-3A 31-E4 00-2D 00-80 00-00 00-00 FF-FF FF-7F 00-00 00-80 00-00 00-00 ... 01-00 00-00 00-00 00-00 C0-E8 11-15 A1-01 00-00 09-00 00-00 00-00 00-00 0A-00 00-00 00-00 00-00 A0-E6 11-15 A1-01 00-00 09-00 00-00 00-00 00-00 0A-00 00-00 00-00 00-00 00-00 00-00 FF-7F 00-00>
  message.array_of_arrays[i]
    Which is: 736-byte object <00-00 00-00 00-00 00-00 0A-3A 33-E4 00-2C 00-80 6F-12 83-C0 CA-21 09-40 00-00 00-00 00-00 00-00 6F-12 83-C0 CA-21 09-C0 04-3A 31-E4 00-2D 00-80 00-00 00-00 FF-FF FF-7F 00-00 00-80 00-00 00-00 ... 01-00 00-00 00-00 00-00 60-4E 10-15 A1-01 00-00 09-00 00-00 00-00 00-00 0A-00 00-00 00-00 00-00 60-52 10-15 A1-01 00-00 09-00 00-00 00-00 00-00 0A-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00>

C:\ci\ws\src\ros2\rosidl\rosidl_typesupport_introspection_tests\test\test_multi_nested_message_introspection.cpp:256
Expected equality of these values:
  message
    Which is: 6864-byte object <50-01 0E-15 A1-01 00-00 C0-78 11-15 A1-01 00-00 0B-00 00-00 00-00 00-00 FC-A8 F7-E1 00-00 00-00 3D-00 00-00 00-00 00-00 D0-8B 11-15 A1-01 00-00 00-00 00-00 00-00 00-E0 00-00 00-00 00-00 00-00 ... 01-00 00-00 00-00 00-00 01-00 00-00 00-00 00-00 80-BE 11-15 A1-01 00-00 01-00 00-00 00-00 00-00 01-00 00-00 00-00 00-00 80-C1 11-15 A1-01 00-00 01-00 00-00 00-00 00-00 01-00 00-00 00-00 00-00>
  message_copy
    Which is: 6864-byte object <50-01 0E-15 A1-01 00-00 C0-FB E1-AB A1-01 00-00 0B-00 00-00 00-00 00-00 FC-A8 F7-E1 00-00 00-00 3D-00 00-00 00-00 00-00 D0-8B 11-15 A1-01 00-00 00-00 00-00 00-00 00-E0 00-00 00-00 00-00 00-00 ... 01-00 00-00 00-00 00-00 01-00 00-00 00-00 00-00 20-20 12-15 A1-01 00-00 01-00 00-00 00-00 00-00 01-00 00-00 00-00 00-00 50-36 12-15 A1-01 00-00 01-00 00-00 00-00 00-00 01-00 00-00 00-00 00-00>

---

Flaky ratio:

job_name	last_fail	first_fail	build_count	failure_count	failure_percentage
nightly_win_rep	2024-01-16	2023-12-19	28	7	25.0
nightly_linux-aarch64_repeated	2024-01-04	2024-01-04	31	1	3.23

aarch64 repeated reference build

First time it was seen was on 2022-02-03, so it's been failing with a 25-30% rate since then.