🧑‍🌾 TriggeredCameraTest.TriggeredCameraBox flaky test on gazebo6 focal CI

[Crola1702]

Environment

• OS Version: Ubuntu 20.04
• Binary Gazebo Fortress build

Description

• Expected behavior: TriggeredCameraBox test should pass
• Actual behavior: TriggeredCameraBox test sometimes fail

Steps to reproduce

1. Run a build in ignition_gazebo-ci-ign-gazebo6-focal-amd64
2. See TriggeredCameraBox test fail if lucky

Output

Reference build: https://build.osrfoundation.org/job/ignition_gazebo-ci-ign-gazebo6-focal-amd64/141/
Test regression: TriggeredCameraTest.TriggeredCameraBox

Log output:

/home/jenkins/workspace/ignition_gazebo-ci-ign-gazebo6-focal-amd64/ign-gazebo/test/integration/triggered_camera.cc:105
Expected: (sleep) < (maxSleep), actual: 30 vs 30
/home/jenkins/workspace/ignition_gazebo-ci-ign-gazebo6-focal-amd64/ign-gazebo/test/integration/triggered_camera.cc:106: Failure
Expected: (imageBuffer) != (nullptr), actual: NULL vs (nullptr)

It has been failing since 2022-05-14 only in Gazebo 6 and Linux-Drogon:

Failing job	Build number	Failure date	Agent
ignition_gazebo-ci-ign-gazebo6-focal-amd64	141	2023-02-13	linux-drogon.nv.focal-cba5e3fd
ignition_gazebo-ci-ign-gazebo6-focal-amd64	129	2022-12-07	linux-drogon.nv.focal-cba5e3fd
ignition_gazebo-ci-ign-gazebo6-focal-amd64	128	2022-12-06	linux-drogon.nv.focal-cba5e3fd
ignition_gazebo-ci-ign-gazebo6-focal-amd64	122	2022-11-30	linux-drogon.nv.focal-cba5e3fd
ignition_gazebo-ci-ign-gazebo6-focal-amd64	116	2022-11-17	linux-drogon.nv.focal-cba5e3fd
ignition_gazebo-ci-ign-gazebo6-focal-amd64	108	2022-10-17	linux-drogon.nv.focal-cba5e3fd
ignition_gazebo-ci-ign-gazebo6-focal-amd64	107	2022-10-13	linux-drogon.nv.focal-cba5e3fd
ignition_gazebo-ci-ign-gazebo6-focal-amd64	95	2022-09-07	linux-drogon.nv.focal-cba5e3fd
ignition_gazebo-ci-ign-gazebo6-focal-amd64	92	2022-09-01	linux-drogon.nv.focal-cba5e3fd
ignition_gazebo-ci-ign-gazebo6-focal-amd64	82	2022-07-23	linux-drogon.nv.focal-4f37bbc3
ignition_gazebo-ci-ign-gazebo6-focal-amd64	80	2022-07-19	linux-drogon.nv.focal-4f37bbc3
ignition_gazebo-ci-ign-gazebo6-focal-amd64	79	2022-07-08	linux-drogon.nv.focal-4f37bbc3
ignition_gazebo-ci-ign-gazebo6-focal-amd64	78	2022-07-06	linux-drogon.nv.focal-4f37bbc3
ignition_gazebo-ci-ign-gazebo6-focal-amd64	73	2022-06-25	linux-drogon.nv.focal-4f37bbc3
ignition_gazebo-ci-ign-gazebo6-focal-amd64	70	2022-06-23	linux-drogon.nv.focal-4f37bbc3
ignition_gazebo-ci-ign-gazebo6-focal-amd64	63	2022-06-02
ignition_gazebo-ci-ign-gazebo6-focal-amd64	57	2022-05-17
ignition_gazebo-ci-ign-gazebo6-focal-amd64	55	2022-05-14