PERFORMANCE_level_manager test failing on Bionic github action

[scpeters]

Environment

• OS Version: Ubuntu 18.04
• Source or binary build? source build of pull request 5 ➡️ 6 #811 targeting main

Description

• Expected behavior: PERFORMANCE_level_manager passes
• Actual behavior: PERFORMANCE_level_manager fails

Steps to reproduce

1. Run a github action with Bionic
2. Check for PERFORMANCE_level_manager test status

Output

Both Bionic GitHub workflow runs for 80e7b85 of #811 failed:

• https:/ignitionrobotics/ign-gazebo/pull/811/checks?check_run_id=2616389299
• https:/ignitionrobotics/ign-gazebo/pull/811/checks?check_run_id=2616389450

  [Dbg] [SimulationRunner.cc:511] Exiting postupdate worker thread (0)
  [Dbg] [level_manager.cc:73] 
  Using levels = 7633 ms
  Without levels = 7479 ms
  /github/workspace/test/performance/level_manager.cc:78: Failure
  Expected: (levelsDuration.count()) <= (nolevelsDuration.count()), actual: 7633023951 vs 7479205571
  [  FAILED  ] LevelManagerPerfrormance.LevelVsNoLevel (16266 ms)

  [Dbg] [SimulationRunner.cc:511] Exiting postupdate worker thread (0)
  [Dbg] [level_manager.cc:73] 
  Using levels = 6947 ms
  Without levels = 6796 ms
  /github/workspace/test/performance/level_manager.cc:78: Failure
  Expected: (levelsDuration.count()) <= (nolevelsDuration.count()), actual: 6947880294 vs 6796243004
  [  FAILED  ] LevelManagerPerfrormance.LevelVsNoLevel (14824 ms)

[darksylinc]

I'm also on Bionic and saw this failure. I wasn't sure if it was my fault (I was in my own custom branch when it failed)

[nkoenig]

Fixed in #1129