Build failed in Jenkins: system-sync_mirrors-epel-el6-x86_64 #1802

See <http://jenkins.ovirt.org/job/system-sync_mirrors-epel-el6-x86_64/1802/display/redirect>

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Started by timer
[EnvInject] - Loading node environment variables.
Building remotely on mirrors.phx.ovirt.org (mirrors) in workspace <http://jenkins.ovirt.org/job/system-sync_mirrors-epel-el6-x86_64/ws/>
 > git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
 > git config remote.origin.url http://gerrit.ovirt.org/jenkins.git # timeout=10
Cleaning workspace
 > git rev-parse --verify HEAD # timeout=10
Resetting working tree
 > git reset --hard # timeout=10
 > git clean -fdx # timeout=10
Pruning obsolete local branches
Fetching upstream changes from http://gerrit.ovirt.org/jenkins.git
 > git --version # timeout=10
 > git fetch --tags --progress http://gerrit.ovirt.org/jenkins.git +refs/heads/*:refs/remotes/origin/* --prune
 > git rev-parse origin/master^{commit} # timeout=10
Checking out Revision 3afc9ba57755a1b2574f7a177184eb66d5f6a90d (origin/master)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 3afc9ba57755a1b2574f7a177184eb66d5f6a90d
Commit message: "ovirt-release: drop non working jobs"
 > git rev-list --no-walk 3afc9ba57755a1b2574f7a177184eb66d5f6a90d # timeout=10
[system-sync_mirrors-epel-el6-x86_64] $ /bin/bash -xe /tmp/jenkins4293223092552671319.sh
+ jenkins/scripts/mirror_mgr.sh resync_yum_mirror epel-el6 x86_64 jenkins/data/mirrors-reposync.conf
Checking if mirror needs a resync
Resyncing repo: epel-el6
Syncing yum repo epel-el6 for arch: x86_64
epel-el6/group                                           | 303 kB     00:00     
tklib-0.5-5.el6.noarch.rpm 0% [                 ]  0.0 B/s |    0 B   --:-- ETA tklib-0.5-5.el6.noarch.rpm                                 | 416 kB   00:02     
Generating yum repo metadata for: epel-el6
Worker exited with non-zero value: -9. Fatal.
Worker exited with non-zero value: -9. Fatal.
Spawning worker 0 with 1519 pkgs
Spawning worker 1 with 1519 pkgs
Spawning worker 2 with 1519 pkgs
Spawning worker 3 with 1518 pkgs
Spawning worker 4 with 1518 pkgs
Spawning worker 5 with 1518 pkgs
Spawning worker 6 with 1518 pkgs
Spawning worker 7 with 1518 pkgs
Build step 'Execute shell' marked build as failure