The settings I use in https://zed.dev

keymap.json

{}

settings.json

{
  "buffer_font_size": 15,
  "base_keymap": "SublimeText",
  "show_whitespaces": "all",
  "features": {
    // Show Copilot icon in status bar
    "copilot": false
  },
  "formatter": {
    "external": {
      "command": "rustup",
      "arguments": [
        "run",
        "nightly",
        "--",
        "rustfmt",
        "--edition",
        "2021",
        "--"
      ]
    }
  },
  "lsp": {
    "rust-analyzer": {
      "initialization_options": {
        "checkOnSave": {
          "command": "clippy"
        }
      }
    }
  }
}