[{"check": "solc-version", "impact": "Informational", "confidence": "High", "description": "Detected issues with version pragma in tests/old_solc.sol.json:\n\t- pragma solidity0.4.21 (old_solc.sol): it allows old versions\n", "elements": [{"type": "expression", "expression": "0.4.21", "source_mapping": {"start": 0, "length": 23, "filename": "old_solc.sol", "lines": []}}]}]