json encoding inception with fluxion resource!

[garlick]

I noticed some unintentional turduckens here while playing with the tracing tools in flux-framework/flux-core#6345.

This is a trace of sched-fluxion-resource when a single core job is submitted:

(match_orelse_reserve and match_multi might even be turduckafishes or wolfturduckens?)

$ sudo flux module trace -H --full sched-fluxion-resource 
[Oct03 20:10]  sched-fluxion-resource rx > feasibility.check [572]
{
  "jobspec": {
    "resources": [
      {
        "type": "slot",
        "count": 1,
        "with": [
          {
            "type": "core",
            "count": 1
          }
        ],
        "label": "task"
      }
    ],
    "tasks": [
      {
        "command": [
          "hostname"
        ],
        "slot": "task",
        "count": {
          "per_slot": 1
        }
      }
    ],
    "attributes": {
      "system": {
        "duration": 30.0,
        "environment": {},
        "cwd": "/nfshome/garlick",
        "shell": {
          "options": {
            "rlimit": {
              "cpu": -1,
              "fsize": -1,
              "data": -1,
              "stack": -1,
              "core": 16384,
              "nofile": 1024,
              "as": -1,
              "rss": -1,
              "nproc": 8192
            }
          }
        },
        "queue": "admin",
        "constraints": {
          "properties": [
            "admin"
          ]
        }
      }
    },
    "version": 1
  },
  "userid": 5588,
  "rolemask": 6,
  "urgency": 16,
  "flags": 0
}
[ +52.272224]  sched-fluxion-resource tx < feasibility.check [0]
[ +52.295303]  sched-fluxion-resource rx > sched-fluxion-resource.match_multi [763]
{
  "cmd": "allocate_orelse_reserve",
  "jobs": "[{\"jobid\": 12431747522232320, \"jobspec\": \"{\\\"resources\\\":[{\\\"type\\\":\\\"slot\\\",\\\"count\\\":1,\\\"with\\\":[{\\\"type\\\":\\\"core\\\",\\\"count\\\":1}],\\\"label\\\":\\\"task\\\"}],\\\"tasks\\\":[{\\\"command\\\":[\\\"hostname\\\"],\\\"slot\\\":\\\"task\\\",\\\"count\\\":{\\\"per_slot\\\":1}}],\\\"attributes\\\":{\\\"system\\\":{\\\"duration\\\":30.0,\\\"cwd\\\":\\\"/nfshome/garlick\\\",\\\"shell\\\":{\\\"options\\\":{\\\"rlimit\\\":{\\\"cpu\\\":-1,\\\"fsize\\\":-1,\\\"data\\\":-1,\\\"stack\\\":-1,\\\"core\\\":16384,\\\"nofile\\\":1024,\\\"as\\\":-1,\\\"rss\\\":-1,\\\"nproc\\\":8192}}},\\\"queue\\\":\\\"admin\\\",\\\"constraints\\\":{\\\"properties\\\":[\\\"admin\\\"]}}},\\\"version\\\":1}\"}]"
}
[ +52.295923]  sched-fluxion-resource tx < sched-fluxion-resource.match_multi [342]
{
  "jobid": 12431747522232320,
  "status": "ALLOCATED",
  "overhead": 0.00044450099999999998,
  "R": "{\"version\": 1, \"execution\": {\"R_lite\": [{\"rank\": \"0\", \"children\": {\"core\": \"0-3\"}}], \"nodelist\": [\"picl0\"], \"properties\": {\"8g\": \"0\", \"admin\": \"0\"}, \"starttime\": 1728011452, \"expiration\": 1728011482}}\n",
  "at": 1728011452
}
[ +52.296013]  sched-fluxion-resource tx < sched-fluxion-resource.match_multi [0]
[ +57.281774]  sched-fluxion-resource rx > feasibility.disconnect [0]
[Oct03 20:11]  sched-fluxion-resource rx > sched-fluxion-resource.partial-cancel [236]
{
  "jobid": 12431747522232320,
  "R": "{\"version\":1,\"execution\":{\"R_lite\":[{\"rank\":\"0\",\"children\":{\"core\":\"0-3\"}}],\"starttime\":0.0,\"expiration\":0.0,\"nodelist\":[\"picl0\"],\"properties\":{\"8g\":\"0\",\"admin\":\"0\"}}}"
}
[  +2.518832]  sched-fluxion-resource tx < sched-fluxion-resource.partial-cancel [19]
{
  "full-removal": 1
}