Fuel Error during deployment

fuel.txt

Failed to execute hook 'shell' Failed to run command cd / && fa_build_image --log-file /var/log/fuel-agent-env-1.log --data_driver nailgun_build_image --input_data '{"image_data": {"/boot": {"container": "gzip", "uri": "http://10.20.0.2:8080/targetimages/env_1_ubuntu_1404_amd64-boot.img.gz", "format": "ext2"}, "/": {"container": "gzip", "uri": "http://10.20.0.2:8080/targetimages/env_1_ubuntu_1404_amd64.img.gz", "format": "ext4"}}, "output": "/var/www/nailgun/targetimages", "repos": [{"name": "ubuntu", "section": "main universe multiverse", "uri": "http://de.archive.ubuntu.com/ubuntu/", "priority": null, "suite": "trusty", "type": "deb"}, {"name": "ubuntu-updates", "section": "main universe multiverse", "uri": "http://de.archive.ubuntu.com/ubuntu/", "priority": null, "suite": "trusty-updates", "type": "deb"}, {"name": "ubuntu-security", "section": "main universe multiverse", "uri": "http://de.archive.ubuntu.com/ubuntu/", "priority": null, "suite": "trusty-security", "type": "deb"}, {"name": "mos", "section": "main restricted", "uri": "http://10.20.0.2:8080/2014.2.2-6.1/ubuntu/x86_64", "priority": 1050, "suite": "mos6.1", "type": "deb"}, {"name": "mos-updates", "section": "main restricted", "uri": "http://mirror.fuel-infra.org/mos/ubuntu/", "priority": 1050, "suite": "mos6.1-updates", "type": "deb"}, {"name": "mos-security", "section": "main restricted", "uri": "http://mirror.fuel-infra.org/mos/ubuntu/", "priority": 1050, "suite": "mos6.1-security", "type": "deb"}, {"name": "mos-holdback", "section": "main restricted", "uri": "http://mirror.fuel-infra.org/mos/ubuntu/", "priority": 1100, "suite": "mos6.1-holdback", "type": "deb"}, {"name": "Auxiliary", "section": "main restricted", "uri": "http://10.20.0.2:8080/2014.2.2-6.1/ubuntu/auxiliary", "priority": 1150, "suite": "auxiliary", "type": "deb"}], "codename": "trusty"}'
Task: 858777ad-cdfb-4f3c-96a1-c3c889ea055c: shell timeout error: execution expired
Task timeout: 3600, Retries: 1

me too, not sure why it happened
the last time i did it, it worked perfectly

Error
Failed to execute hook 'shell' Failed to run command cd / && fa_build_image --image_build_dir /var/lib/fuel/ibp --log-file /var/log/fuel-agent-env-1.log --data_driver nailgun_build_image --input_data '{"image_data": {"/boot": {"container": "gzip", "uri": "http://10.20.0.2:8080/targetimages/env_1_ubuntu_1404_amd64-boot.img.gz", "format": "ext2"}, "/": {"container": "gzip", "uri": "http://10.20.0.2:8080/targetimages/env_1_ubuntu_1404_amd64.img.gz", "format": "ext4"}}, "output": "/var/www/nailgun/targetimages", "repos": [{"name": "ubuntu", "section": "main universe multiverse", "uri": "http://archive.ubuntu.com/ubuntu/", "priority": null, "suite": "trusty", "type": "deb"}, {"name": "ubuntu-updates", "section": "main universe multiverse", "uri": "http://archive.ubuntu.com/ubuntu/", "priority": null, "suite": "trusty-updates", "type": "deb"}, {"name": "ubuntu-security", "section": "main universe multiverse", "uri": "http://archive.ubuntu.com/ubuntu/", "priority": null, "suite": "trusty-security", "type": "deb"}, {"name": "mos", "section": "main restricted", "uri": "http://10.20.0.2:8080/2015.1.0-7.0/ubuntu/x86_64", "priority": 1050, "suite": "mos7.0", "type": "deb"}, {"name": "mos-updates", "section": "main restricted", "uri": "http://mirror.fuel-infra.org/mos-repos/ubuntu/7.0/", "priority": 1050, "suite": "mos7.0-updates", "type": "deb"}, {"name": "mos-security", "section": "main restricted", "uri": "http://mirror.fuel-infra.org/mos-repos/ubuntu/7.0/", "priority": 1050, "suite": "mos7.0-security", "type": "deb"}, {"name": "mos-holdback", "section": "main restricted", "uri": "http://mirror.fuel-infra.org/mos-repos/ubuntu/7.0/", "priority": 1100, "suite": "mos7.0-holdback", "type": "deb"}, {"name": "Auxiliary", "section": "main restricted", "uri": "http://10.20.0.2:8080/2015.1.0-7.0/ubuntu/auxiliary", "priority": 1150, "suite": "auxiliary", "type": "deb"}], "codename": "trusty"}'