There was an announcement in one of the private channels of the Dustbunny Discord about it. Dustsweeper had stopped because he thought he couldn't sweep dust anymore after hardfork 21. Fraenk who runs Dustbunny contacted him and gave him the formula that Dustbunny uses since the hardfork, so now Dustsweeper is running again and he is able to sweep dust.
Essentially, Dustbunny helped Dustsweeper to get going again.
Here's an invitation link to the Dustbunny Discord if you ever decide to join: https://discord.gg/kyTY8gJ