def warn_bad_binstubs
    check = LanguagePack::Helpers::BinstubCheck.new(
      warn_object: self,
      app_root_dir: self.app_path,
    )
    check.call
  end
A bad shebang line looks like this:

```
#!/usr/bin/env ruby2.5
```

Since `ruby2.5` is not a valid binary name