It rans out of memory.

[rluisr]

When vuls runs "vuls scan", run out of remote server's memory.
This command is heavy...
bash -c set -o pipefail; yes no | yum update --changelog exim | grep CVE

vuls server
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OS : CentOS 7.2.1511
go : go version go1.6.2 linux/amd64
vuls : Latest version(05/07)

Remote server
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OS : CentOS 6.7
MEM : 1GB / Swap:4GB

Before run "vuls scan" (Remote server "free -m")
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total used free shared buffers cached
Mem: 995 533 462 0 2 91
-/+ buffers/cache: 438 556
Swap: 4031 0 4031

config.toml
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[servers]

[servers.192-168-20-3]
host = "192.168.20.3"
port = "22"
user = "root"
password = "xxxxx"

Error message
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[May  7 17:31:25] ERROR [localhost] Failed to scan. err: root@192.168.20.3:22: Failed to get changelog. status: 2, stdout: grep: メモリを使い果たしました
, stderr: