Sara enhanced the BazelTestRunner in the bazelbuild/bazel repository by introducing a mechanism to distinguish OutOfMemoryError-related test failures from standard failures using exit code 137. This approach allowed the system to detect OOM conditions during distributed test execution and trigger targeted retries with increased memory allocation, thereby improving overall test reliability. Sara’s work involved shell scripting and error handling within the build system, leveraging both Java and Shell to implement robust test automation. The solution addressed a specific reliability gap in distributed environments, demonstrating a focused and technically sound contribution within a short timeframe, with all changes tracked to a single commit.