[bugfix] fix structured outputs key missing issue from #24929 (#25195)

Signed-off-by: Lu Fang <fanglu@fb.com>

vllm/v1/core/sched/scheduler.py

@@ -578,8 +578,10 @@ class Scheduler(SchedulerInterface):
             scheduled_spec_decode_tokens,
             req_to_new_blocks,
         )
+        scheduled_requests = (scheduled_new_reqs + scheduled_running_reqs +
+                              scheduled_resumed_reqs)
         structured_output_request_ids, grammar_bitmask = (
-            self.get_grammar_bitmask(self.running,
+            self.get_grammar_bitmask(scheduled_requests,
                                      scheduled_spec_decode_tokens))
         scheduler_output = SchedulerOutput(
             scheduled_new_reqs=new_reqs_data,

vllm/v1/structured_output/utils.py

@@ -90,9 +90,10 @@ def apply_grammar_bitmask(
     seq = sorted(scheduler_output.structured_output_request_ids.items(),
                  key=lambda x: x[1])
     for req_id, _ in seq:
-        logit_index = struct_out_req_batch_indices[req_id]
         num_spec_tokens = len(
             scheduler_output.scheduled_spec_decode_tokens.get(req_id, []))
+        if req_id in struct_out_req_batch_indices:
+            logit_index = struct_out_req_batch_indices[req_id]
             for i in range(1 + num_spec_tokens):
                 sorted_bitmask[logit_index + i] = \
                     grammar_bitmask[cumulative_index + i]