[Qa-jenkins-scm] Build failed in Jenkins: reproducible_setup_pbuilder_unstable_armhf_jtx1c #440

[jenkins at jenkins.debian.net]

See <https://jenkins.debian.net/job/reproducible_setup_pbuilder_unstable_armhf_jtx1c/440/display/redirect>

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[EnvInject] - Loading node environment variables.
Building remotely on jtx1c-armhf-rb.debian.net (armhf jtx1c) in workspace <https://jenkins.debian.net/job/reproducible_setup_pbuilder_unstable_armhf_jtx1c/ws/>
[reproducible_setup_pbuilder_unstable_armhf_jtx1c] $ /bin/sh -xe /tmp/jenkins5661182520460181538.sh
+ /srv/jenkins/bin/jenkins_master_wrapper.sh
Host key verification failed.
Sun 20 Jan 17:57:26 UTC 2019 - jtx1c-armhf-rb.debian.net seems to be down, sleeping 1min before exiting with error.
Build step 'Execute shell' marked build as failure