refactor(errors): replace silent exception handling in core packages

artemis/runtime/daemon_client.py

@@ -133,7 +133,7 @@ def spawn_daemon(
         if log_handle is not subprocess.DEVNULL:
             try:
                 log_handle.close()
-            except Exception:
+            except OSError:
                 pass
 
 

artemis/runtime/device_pool.py

@@ -152,7 +152,8 @@ class DevicePool:
             if proc is not None:
                 try:
                     proc.kill()
-                except Exception:
+                except (ProcessLookupError, OSError):
+                    # Process already exited; nothing left to clean up.
                     pass
             return None
 
@@ -256,7 +257,8 @@ class DevicePool:
             if proc is not None:
                 try:
                     proc.kill()
-                except Exception:
+                except (ProcessLookupError, OSError):
+                    # Process already exited; nothing left to clean up.
                     pass
 
     async def warm_up_async(

artemis/runtime/supervisor.py

@@ -113,8 +113,9 @@ class ProcessSupervisor:
             logger.debug(f"Failed graceful stop for process {proc}: {e}")
             try:
                 proc.kill()
-            except Exception:
-                pass
+            except (ProcessLookupError, OSError) as kill_exc:
+                # ProcessLookupError: already exited, nothing to do.
+                logger.debug(f"Failed to kill process {proc}: {kill_exc}")
 
 
 process_supervisor: ProcessSupervisor = ProcessSupervisor()