Luke Butters developed a new CI debugging capability for the OctopusDeploy/Calamari repository, focusing on enhancing observability during resource contention scenarios. He implemented Open File Handle Logging, which leverages the lsof command to capture and log open file handles when specific error conditions are detected in CI environments. Using C# and backend development skills, Luke integrated this feature to improve diagnostics and facilitate faster root-cause analysis of intermittent file handle issues. The work demonstrated a targeted approach to exception handling and command line tool integration, delivering a focused solution that reduces mean time to recovery for CI-related failures.