{
 "task": "G1948",
 "mutants": [
  {
   "object": "{{P}}MSG_ARC",
   "mutant": "message 001: number + 50 (number)",
   "status": "invalid",
   "hidden": "0/0",
   "failed_tests": []
  },
  {
   "object": "{{P}}MSG_ARC",
   "mutant": "message 002: text + ' x' (text)",
   "status": "killed",
   "hidden": "7/8",
   "failed_tests": [
    "MSG_002_TEXT"
   ]
  },
  {
   "object": "{{P}}MSG_ARC",
   "mutant": "message 004: text + ' x' (text)",
   "status": "killed",
   "hidden": "7/8",
   "failed_tests": [
    "MSG_004_TEXT"
   ]
  },
  {
   "object": "{{P}}MSG_ARC",
   "mutant": "message 004: &1 -> &2 (placeholder)",
   "status": "killed",
   "hidden": "7/8",
   "failed_tests": [
    "MSG_004_TEXT"
   ]
  },
  {
   "object": "{{P}}MSG_ARC",
   "mutant": "message 002: &1 -> &2 (placeholder)",
   "status": "killed",
   "hidden": "7/8",
   "failed_tests": [
    "MSG_002_TEXT"
   ]
  }
 ],
 "valid": 4,
 "killed": 4,
 "kill_rate": 1.0,
 "ok": true
}