{
  "$message_type": "diagnostic",
  "children": [
    {
      "children": [],
      "code": null,
      "level": "note",
      "message": "`#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default",
      "rendered": null,
      "spans": []
    },
    {
      "children": [],
      "code": null,
      "level": "help",
      "message": "if this is intentional, prefix it with an underscore",
      "rendered": null,
      "spans": [
        {
          "byte_end": 21,
          "byte_start": 20,
          "column_end": 10,
          "column_start": 9,
          "expansion": null,
          "file_name": "./tests/everything/replace-only-one-char.rs",
          "is_primary": true,
          "label": null,
          "line_end": 2,
          "line_start": 2,
          "suggested_replacement": "_x",
          "suggestion_applicability": "MaybeIncorrect",
          "text": [
            {
              "highlight_end": 10,
              "highlight_start": 9,
              "text": "    let x = 42;"
            }
          ]
        }
      ]
    }
  ],
  "code": {
    "code": "unused_variables",
    "explanation": null
  },
  "level": "warning",
  "message": "unused variable: `x`",
  "rendered": "warning: unused variable: `x`/n --> ./tests/everything/replace-only-one-char.rs:2:9/n  |/n2 |     let x = 42;/n  |         ^ help: if this is intentional, prefix it with an underscore: `_x`/n  |/n  = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default/n/n",
  "spans": [
    {
      "byte_end": 21,
      "byte_start": 20,
      "column_end": 10,
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      "expansion": null,
      "file_name": "./tests/everything/replace-only-one-char.rs",
      "is_primary": true,
      "label": null,
      "line_end": 2,
      "line_start": 2,
      "suggested_replacement": null,
      "suggestion_applicability": null,
      "text": [
        {
          "highlight_end": 10,
          "highlight_start": 9,
          "text": "    let x = 42;"
        }
      ]
    }
  ]
}
{
  "$message_type": "diagnostic",
  "children": [],
  "code": null,
  "level": "warning",
  "message": "1 warning emitted",
  "rendered": "warning: 1 warning emitted/n/n",
  "spans": []
}