error

TASK [Install docker] **********************************************************
fatal: [localhost]: FAILED! => {"cache_update_time": 0, "cache_updated": false, "changed": false, "failed": true, "msg": "'/usr/bin/apt-get -y -o \"Dpkg::Options::=--force-confdef\" -o \"Dpkg::Options::=--force-confold\"     install 'docker-engine'' failed: E: There are problems and -y was used without --force-yes\n", "stderr": "E: There are problems and -y was used without --force-yes\n", "stdout": "Reading package lists...\nBuilding dependency tree...\nReading state information...\nThe following extra packages will be installed:\n  aufs-tools cgroup-lite\nThe following NEW packages will be installed:\n  aufs-tools cgroup-lite docker-engine\n0 upgraded, 3 newly installed, 0 to remove and 365 not upgraded.\nNeed to get 19.5 MB of archives.\nAfter this operation, 102 MB of additional disk space will be used.\nWARNING: The following packages cannot be authenticated!\n  docker-engine\n", "stdout_lines": ["Reading package lists...", "Building dependency tree...", "Reading state information...", "The following extra packages will be installed:", "  aufs-tools cgroup-lite", "The following NEW packages will be installed:", "  aufs-tools cgroup-lite docker-engine", "0 upgraded, 3 newly installed, 0 to remove and 365 not upgraded.", "Need to get 19.5 MB of archives.", "After this operation, 102 MB of additional disk space will be used.", "WARNING: The following packages cannot be authenticated!", "  docker-engine"]}