Using docker clickhouse-server:latest

After upgrade - we have many error-log entries such as:

2019.01.14 02:24:10.831297 [ 17 ] {} graphite.metrics_lr (StorageReplicatedMergeTree): DB::StorageReplicatedMergeTree::queueTask()::<lambda(DB::StorageReplicatedMergeTree::LogEntryPtr&)>: Poco::Exception. Code: 1000, e.code() = 0, e.displayText() = No message received, e.what() = No message received
2019.01.14 02:24:20.916719 [ 7 ] {} graphite.metrics_lr (StorageReplicatedMergeTree): DB::StorageReplicatedMergeTree::queueTask()::<lambda(DB::StorageReplicatedMergeTree::LogEntryPtr&)>: Poco::
Exception. Code: 1000, e.code() = 0, e.displayText() = No message received, e.what() = No message received

2019.01.14 02:24:26.813686 [ 4 ] {} graphite.data_lr (StorageReplicatedMergeTree): DB::StorageReplicatedMergeTree::queueTask()::<lambda(DB::StorageReplicatedMergeTree::LogEntryPtr&)>: Poco::Exception. Code: 1000, e.code() = 0, e.displayText() = No message received, e.what() = No message received

2019.01.14 02:24:32.580035 [ 16 ] {} graphite.data_lr (StorageReplicatedMergeTree): DB::StorageReplicatedMergeTree::queueTask()::<lambda(DB::StorageReplicatedMergeTree::LogEntryPtr&)>: Poco::Exception. Code: 1000, e.code() = 0, e.displayText() = No message received, e.what() = No message received