Not gracefully service stopping by SIGINT signal

[goDeni]

running exporter

> /usr/bin/rabbitmq_exporter -config-file /usr/share/udv/rabbitmq-exporter-sensor/exporter-config.json

in another terminal sending SIGINT signal

> kill -2 1428168

In the terminal with running exporter

...
INFO[0009] Shutting down
FATA[0009] http: Server closed
> echo $?
1

We got exit-code 1, but was expected exit-code 0