gnufree

**Describe the bug** I started 10 indexer nodes to consume Kafka data and reported the following error: ``` 2022-05-27T06:28:14.854Z INFO {actor=quickwit_indexing::actors::indexing_server::IndexingServer}:{msg_id=1}::{msg_id=418922}:{index=clickhouse gen=319}:{actor=Packager}: quickwit_actors::sync_actor: actor-exit actor_id=Packager-nameless-H4KW exit_status=Killed 2022-05-27T06:28:15.217Z ERROR {actor=quickwit_indexing::actors::indexing_server::IndexingServer}:{msg_id=1}::{msg_id=419295}: quickwit_actors::actor_handle:...