Report times read and desired when run time is out of range.

testsuite/expect/test12.2

@@ -170,10 +170,11 @@ expect {
 set diff_time [expr $elapsed_time - $sleep_time]
 set error_time [expr abs($diff_time)]
 if {$error_time > 5} {
-	send_user "\nFAILURE: sacct elapsed time error of $error_time\n"
+	send_user "\nFAILURE: sacct elapsed time error of $error_time secs\n"
+	send_user "  Wanted $sleep_time secs, got $error_time secs\n"
 	set exit_code 1
 } else {
-	send_user "\nSUCCESS: sacct elapsed time error of $error_time\n"
+	send_user "\nSUCCESS: sacct elapsed time error of $error_time secs\n"
 }
 
 set mem_used -1