Pricing
00
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.

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Operator 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

01

System boundary

Trace only the relevant path.

3 nodes
  1. 01old overlay→
  2. 02new overlay→
  3. 03runtime executableOUT
02

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.

03

Verification

Pass more than the visible symptom.

4 checks
  • Runtime prefix is current workspace
  • Removed output is absent
  • Hidden regression behavior
  • Root cause explanation