node0 2025-09-08T11:26:56.165687Z [capnp-loop] [../../../src/ipc/capnp/protocol.cpp:35] [void ipc::capnp::(anonymous namespace)::IpcLogFn(bool, std::string)] [ipc] {bitcoin-node-166995/b-capnp-loop-166997} IPC server recv request  #14 BlockTemplate.submitSolution$Params (context = (thread = <external capability>), version = 0, timestamp = 0, nonce = 0, coinbase = "") 
 node0 2025-09-08T11:26:56.165711Z [capnp-loop] [../../../src/ipc/capnp/protocol.cpp:35] [void ipc::capnp::(anonymous namespace)::IpcLogFn(bool, std::string)] [ipc] {bitcoin-node-166995/b-capnp-loop-166997} IPC server post request  #14 {bitcoin-node-166995/b-capnp-loop-167036 (from pythread)} 
 test  2025-09-08T11:26:56.207859Z TestFramework (ERROR): Unexpected exception 
                                   Traceback (most recent call last):
                                     File "/root/bitcoin/test/functional/test_framework/test_framework.py", line 199, in main
                                       self.run_test()
                                     File "/root/bitcoin/./debugbuild/test/functional/interface_ipc.py", line 186, in run_test
                                       self.run_mining_test()
                                     File "/root/bitcoin/./debugbuild/test/functional/interface_ipc.py", line 182, in run_mining_test
                                       asyncio.run(capnp.run(async_routine()))
                                     File "/usr/lib/python3.11/asyncio/runners.py", line 190, in run
                                       return runner.run(main)
                                              ^^^^^^^^^^^^^^^^
                                     File "/usr/lib/python3.11/asyncio/runners.py", line 118, in run
                                       return self._loop.run_until_complete(task)
                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                                     File "/usr/lib/python3.11/asyncio/base_events.py", line 653, in run_until_complete
                                       return future.result()
                                              ^^^^^^^^^^^^^^^
                                     File "capnp/lib/capnp.pyx", line 1965, in run
                                     File "capnp/lib/capnp.pyx", line 1966, in capnp.lib.capnp.run
                                     File "/root/bitcoin/./debugbuild/test/functional/interface_ipc.py", line 128, in async_routine
                                       result = await template.result.submitSolution(ctx, 0, 0, 0, b"")
                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                                   capnp.lib.capnp.KjException: capnp/rpc.c++:2778: disconnected: Peer disconnected.
                                   stack: 7fd1cba914c4 7fd1cba87d10 7fd1cba777c0 7fd1cb9164f0 7fd1cb9187d0
 test  2025-09-08T11:26:56.218026Z TestFramework (DEBUG): Closing down network thread 
 test  2025-09-08T11:26:56.268255Z TestFramework (INFO): Not stopping nodes as test failed. The dangling processes will be cleaned up later. 
 test  2025-09-08T11:26:56.268354Z TestFramework (WARNING): Not cleaning up dir /tmp/bitcoin_func_test_jp4hfh13 
 test  2025-09-08T11:26:56.268384Z TestFramework (ERROR): Test failed. Test logging available at /tmp/bitcoin_func_test_jp4hfh13/test_framework.log 
 test  2025-09-08T11:26:56.268453Z TestFramework (ERROR): 
 test  2025-09-08T11:26:56.268517Z TestFramework (ERROR): Hint: Call /root/bitcoin/test/functional/combine_logs.py '/tmp/bitcoin_func_test_jp4hfh13' to consolidate all logs 
 test  2025-09-08T11:26:56.268547Z TestFramework (ERROR): 
 test  2025-09-08T11:26:56.268569Z TestFramework (ERROR): If this failure happened unexpectedly or intermittently, please file a bug and provide a link or upload of the combined log. 
 test  2025-09-08T11:26:56.268603Z TestFramework (ERROR): https://github.com/bitcoin/bitcoin/issues 
 test  2025-09-08T11:26:56.268627Z TestFramework (ERROR): 

 node0 stderr terminate called after throwing an instance of 'std::ios_base::failure[abi:cxx11]'
  what():  SpanReader::read(): end of data: iostream error