[Qa-jenkins-scm] Build failed in Jenkins: reproducible_setup_pbuilder_buster_armhf_ff64a #76

[jenkins at jenkins.debian.net]

See <https://jenkins.debian.net/job/reproducible_setup_pbuilder_buster_armhf_ff64a/76/display/redirect>

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Started by timer
[EnvInject] - Loading node environment variables.
Building remotely on ff64a-armhf-rb.debian.net (armhf ff64a) in workspace <https://jenkins.debian.net/job/reproducible_setup_pbuilder_buster_armhf_ff64a/ws/>
[reproducible_setup_pbuilder_buster_armhf_ff64a] $ /bin/sh -xe /tmp/jenkins8654826035492870839.sh
+ /srv/jenkins/bin/jenkins_master_wrapper.sh
mux_client_request_session: session request failed: Session open refused by peer
ControlSocket /var/lib/jenkins/.ssh/master-jenkins at ff64a-armhf-rb.debian.net:2250 already exists, disabling multiplexing
mux_client_request_session: session request failed: Session open refused by peer
Authentication failed.

SSH EXIT CODE: 255
Build step 'Execute shell' marked build as failure