In productionProintermediateBuild state
The old code still runs
Prove which artifact executes and restore a clean build without deleting unrelated workspaces.
Pairs with Workspaces and reproducible setup in Robotics Development Setup & Recovery. Read the concept first, then diagnose it here.
Unlock this lab with ProOperator report
A removed log message still appears after rebuilding the package.
Ubuntu 24.04 setup emulator, isolated disk images, Linux recovery shell, ROS 2 Jazzy
System boundary
Trace only the relevant path.
old overlaynew overlayruntime executable
How this lab works
You diagnose it — no command list.
Open the repair workspace and gather your own evidence in a real terminal. No diagnostic commands are handed to you — finding the fault is the exercise. Stuck? Progressive hints unlock inside the workspace.
Verification
Your repair must pass more than the visible symptom.
- Runtime prefix is current workspace
- Removed output is absent
- Hidden regression behavior
- Root cause explanation