The receiving node MAY fail the channel if: it considers dust_limit_satoshis too large.
The receiving node MUST fail the channel if: dust_limit_satoshis is greater than channel_reserve_satoshis.
dust_limit_satoshis is smaller than 354 satoshis (see BOLT 3).
つまり lnd v0.12.1 が指定した dust limit が ldk に取っては多きすぎると判断されたっぽい
The receiver should not accept large dust_limit_satoshis, as this could be used in griefing attacks, where the peer publishes its commitment with a lot of dust htlcs, which effectively become miner fees.