Function benchmark_task_image 

pub fn benchmark_task_image(
    registry: &str,
    benchmark: &str,
    task_id: &str,
    tag: &str,
) -> String

{registry}/benchmarks/<name>-<task>:<tag> — a per-task benchmark variant (swe-bench-style), built outside bake’s static graph (BAKE.md). The task id is lowercased: Docker repo names + tags MUST be lowercase and some per-task ids carry uppercase (swe-bench-pro’s instance_NodeBB__…). This affects only the image NAME — EVAL_TASK_ID keeps the real id at runtime.