I've seen a couple of these;

```
[00:00:20][c2c5e5d0][ push:freedesktop-sdk.bst:components/kbd.bst] BUG     Push                                                                                        
                                                                                                                                                                       
    An unhandled exception occured:                                                                                                                                    
                                                                                                                                                                       
    Traceback (most recent call last):                                                                                                                                 
      File "/home/r/.local/lib/python3.10/site-packages/buildstream/_scheduler/jobs/job.py", line 384, in _child_action                                                
        result = self.child_process()                                                                                                                                  
      File "/home/r/.local/lib/python3.10/site-packages/buildstream/_scheduler/jobs/elementjob.py", line 94, in child_process                                          
        return self._action_cb(self._element)                                                                                                                          
      File "/home/r/.local/lib/python3.10/site-packages/buildstream/_scheduler/queues/pushqueue.py", line 37, in process                                               
        if not element._push():                                                                                                                                        
      File "/home/r/.local/lib/python3.10/site-packages/buildstream/element.py", line 1759, in _push                                                                   
        pushed = self.__artifacts.push(self, self.__get_cache_keys_for_commit())
      File "/home/r/.local/lib/python3.10/site-packages/buildstream/_artifactcache/artifactcache.py", line 738, in push
        remote.init()
      File "/home/r/.local/lib/python3.10/site-packages/buildstream/_artifactcache/cascache.py", line 1100, in init
        response = self.capabilities.GetCapabilities(request)
      File "/home/r/.local/lib/python3.10/site-packages/grpc/_channel.py", line 946, in __call__
        return _end_unary_response_blocking(state, call, False, None)
      File "/home/r/.local/lib/python3.10/site-packages/grpc/_channel.py", line 849, in _end_unary_response_blocking
        raise _InactiveRpcError(state)
    grpc._channel._InactiveRpcError: <_InactiveRpcError of RPC that terminated with:
        status = StatusCode.UNAVAILABLE
        details = "failed to connect to all addresses; last error: UNKNOWN: ipv4:141.0.157.203:11002: tcp handshaker shutdown"
        debug_error_string = "UNKNOWN:failed to connect to all addresses; last error: UNKNOWN: ipv4:141.0.157.203:11002: tcp handshaker shutdown {grpc_status:14, created_time:"2023-02-22T21:36:53.702994723+00:00"}"
    >


```