Fails to compile

[BrettMayson]

Tries to get serenity-rs/common

    Updating git repository `https://github.com/serenity-rs/model`
    Updating git repository `https://github.com/serenity-rs/common`
error: failed to load source for a dependency on `serenity-common`

Caused by:
  Unable to update https://github.com/serenity-rs/common```

[AltF02]

Fixed by #2