diff -r 362bf802013e -r 5ecaf881b563 src/Pure/Tools/build_process.scala
--- a/src/Pure/Tools/build_process.scala	Thu Mar 02 13:19:21 2023 +0100
+++ b/src/Pure/Tools/build_process.scala	Thu Mar 02 13:26:46 2023 +0100
@@ -601,7 +601,7 @@
       val (numa_node, state1) = state.numa_next(build_context.numa_nodes)
       val node_info = Build_Job.Node_Info(build_context.hostname, numa_node)
       val job =
-        new Build_Job.Session_Job(
+        Build_Job.start_session(
           build_context, build_deps.background(session_name), input_shasum, node_info)
       state1.add_running(session_name, job)
     }