[
  {
    "check": "low-level-calls",
    "impact": "Informational",
    "confidence": "High",
    "description": "Low level call in Sender.send (tests/low_level_calls.sol#5-7):\n\t-_receiver.call.value(msg.value).gas(7777)() tests/low_level_calls.sol#6\n",
    "elements": [
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        "source_mapping": {
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          "filename_relative": "tests/low_level_calls.sol",
          "filename_absolute": "/home/travis/build/crytic/slither/tests/low_level_calls.sol",
          "filename_short": "tests/low_level_calls.sol",
          "lines": [
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          ],
          "starting_column": 5,
          "ending_column": 6
        },
        "contract": {
          "type": "contract",
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            "starting_column": 1,
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      {
        "type": "expression",
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        "source_mapping": {
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]