Try fixing thread shim on 3.14+

Author: KirillovProj

hstest/common/process_utils.py

@@ -20,21 +20,27 @@ def _adjust_thread_count(self) -> None:
         if self._idle_semaphore.acquire(timeout=0):
             return
 
-        # When the executor gets lost, the weakref callback will wake up
-        # the worker threads.
         def weakref_cb(_, q=self._work_queue) -> None:
             q.put(None)
 
         num_threads = len(self._threads)
         if num_threads < self._max_workers:
             thread_name = "%s_%d" % (self._thread_name_prefix or self, num_threads)
 
-            args = (
-                weakref.ref(self, weakref_cb),
-                self._work_queue,
-                self._initializer,
-                self._initargs,
-            )
+            # Python 3.14+ changed _worker signature and removed _initializer/_initargs
+            if hasattr(self, '_create_worker_context'):
+                args = (
+                    weakref.ref(self, weakref_cb),
+                    self._create_worker_context(),
+                    self._work_queue,
+                )
+            else:
+                args = (
+                    weakref.ref(self, weakref_cb),
+                    self._work_queue,
+                    self._initializer,
+                    self._initargs,
+                )
 
             t = threading.Thread(name=thread_name, target=_worker, args=args, group=self.group)
             t.daemon = True