Getting lots of "PAPI error code 10. Message: 14" errors

Many of the jobs I launched last night have failed with "PAPI error code 10. Message: 14" errors. First, can we change this error message to something more helpful? And do we know what this error means and why it's happening?
(Note: it should have nothing to do with pre-emptibles, because I'm not using them)

Here's an example:
"message: Task BamToUnmappedBams.RevertSam:NA:1 failed. The job was stopped before the command finished. PAPI error code 10. Message: 14: VM ggp-11800192118132082400 stopped unexpectedly."