Burrow process crashed

Burrow is crashing after certain time, without showing any information other than some fatal memory error.

Below is the config file. (removed server names from the file)

[general]
pidfile="burrow.pid"
stdout-logfile="burrow.out"
access-control-allow-origin="*"

[logging]
filename="logs/burrow.log"
level="info"
maxsize=100
maxbackups=30
maxage=10
use-localtime=false
use-compression=true

[zookeeper]
servers=[ "" ]
timeout=6
zookeeper-offsets=true

[cluster.dev_cluster]
client-profile="dev_cluster"
class-name="kafka"
servers=[ "" ]
topic-refresh=120
offset-refresh=30
offset-topic="__consumer_offsets"

[storage.default]
class-name="inmemory"
workers=20
intervals=15
expire-group=604800
min-distance=1

[client-profile.dev_cluster]
client-id="burrow-client"
kafka-version="0.11.0"

[consumer.consumer_dev_cluster_kafka]
class-name="kafka"
cluster="dev_cluster"
servers=[ "" ]
client-profile="dev_cluster"
group-blacklist="^(console-consumer-|python-kafka-consumer-|quick-).*$"
group-whitelist=""

[consumer.consumer_dev_cluster_zk]
class-name="kafka_zk"
cluster="dev_cluster"
servers=[ "" ]
zookeeper-timeout=30
group-blacklist="^(console-consumer-|python-kafka-consumer-).*$"

[httpserver.default]
address=":8050"

Logs are attached
[burrow.txt](https://github.com/linkedin/Burrow/files/3005235/burrow.txt)

Start by reading the attached burrow.txt log and comparing the supplied configuration, especially the storage and Kafka/Zookeeper settings. Reproduce the crash with that configuration if possible; done means identifying the memory-error cause and documenting or fixing it with a regression check, though the payload names no source file or test.

Written by the indexing model from the issue text.