Examine source code of Old Rustlang Redirect

{
  "name": "Old Rustlang Redirect",
  "description": "Ensure Rustlang always loads the old design",
  "version": "2resigned1",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "*://rust-lang.org/*",
    "*://www.rust-lang.org/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c6d13d0a-4061-44c3-90fc-f6ad74216b24}"
    }
  }
}