[
  {
    "dep_name": [],
    "name": "libc",
    "number": 0
  },
  {
    "dep_name": [
      "proc-macro2",
      "unicode-ident",
      "quote",
      "proc-macro2",
      "unicode-ident",
      "unicode-ident"
    ],
    "name": "syn",
    "number": 6
  }
]