An easy test case for the sending of UnreportableReason on a 14.04 system is downgrade multiarch-support to the version in the release pocket, while having -updates enabled, and then kill sleep. After the apport collection process is run you'll see the following in the report:
UnreportableReason:
You have some obsolete package versions installed. Please upgrade the following packages and check if the problem still occurs:
An easy test case for the sending of UnreportableReason on a 14.04 system is downgrade multiarch-support to the version in the release pocket, while having -updates enabled, and then kill sleep. After the apport collection process is run you'll see the following in the report:
UnreportableReason:
You have some obsolete package versions installed. Please upgrade the following packages and check if the problem still occurs:
multiarch-support