= Job status summary =

Jobs can fail in various ways.
Here's a summary of what ends up in the server DB
(in all cases, result.outcome is RESULT_OUTCOME_CLIENT_ERROR (3).

|| '''what happened''' || '''result.exit_status''' || '''<message> in result.stderr_out''' ||
|| app crashed || status returned by OS || "process got signal N" or similar ||
|| app called exit(N), N nonzero || N || "[OS error string] - exit code %d (0x%x) " or similar ||
|| app aborted by client, too much time || ERR_RSC_LIMIT_EXCEEDED (-177) || "Maximum elapsed time exceeded" ||
|| app aborted by client, too much disk || ERR_RSC_LIMIT_EXCEEDED (-177) || "Maximum disk usage exceeded" ||
|| app aborted by client, too much RAM || ERR_RSC_LIMIT_EXCEEDED (-177) || "Maximum memory exceeded" ||
|| abort requested by scheduler || ERR_ABORTED_BY_PROJECT (-221) || "aborted by project - no longer usable" ||
|| abort if not started requested by scheduler (because past deadline) || ERR_ABORTED_BY_PROJECT (-221) || ||
|| too many exit(0)s || ERR_TOO_MANY_EXITS (-226) || "too many exit(0)s" ||
|| abort requested by user || ERR_ABORTED_VIA_GUI (-197) || ||
|| input file download failed || ERR_RESULT_DOWNLOAD (-186) || "WU download error: %s" or similar ||
|| output file upload failed || ERR_RESULT_UPLOAD (-187) || description of failed uploads ||
|| client exiting, config.abort_jobs_on_exit || ERR_ABORTED_ON_EXIT || "aborting on client exit" ||
|| scheduler acked active job || EXIT_ABORTED_BY_CLIENT (194) || "Got ack for job that's still active" ||
|| app launch failed || ERR_RESULT_START (-185) || "couldn't start %s: %d" ||