Maybe

```ruby
def handle?
  tokens.any? or do
    error "No GitHub OAuth tokens found for #{object.repository.slugs}"
    false # or nil
  end
end
```

If `tokens.any?` is `true`, it is returned. Otherwise, log the message.

If `error` returns `nil`, then `false` and the `do` block are unnecessary:

```ruby
def handle?
  tokens.any? or error "No GitHub OAuth tokens found for #{object.repository.slugs}"
end