fixes

tests/integration/conftest.py

@@ -474,6 +474,14 @@ async def run_binary_and_wait_for_port(
 
         if process.returncode is not None:
             error_msg += f"\nProcess exited with code: {process.returncode}"
+            # Check for common signals
+            if process.returncode < 0:
+                sig = -process.returncode
+                try:
+                    sig_name = signal.Signals(sig).name
+                    error_msg += f" (killed by signal {sig_name})"
+                except ValueError:
+                    error_msg += f" (killed by signal {sig})"
 
         # Include any output collected so far
         if stdout_lines:
@@ -501,6 +509,20 @@ async def run_binary_and_wait_for_port(
         if controller_transport is not None:
             controller_transport.close()
 
+        # Log the exit code if process already exited
+        if process.returncode is not None:
+            print(f"\nProcess exited with code: {process.returncode}", file=sys.stderr)
+            if process.returncode < 0:
+                sig = -process.returncode
+                try:
+                    sig_name = signal.Signals(sig).name
+                    print(
+                        f"Process was killed by signal {sig_name} ({sig})",
+                        file=sys.stderr,
+                    )
+                except ValueError:
+                    print(f"Process was killed by signal {sig}", file=sys.stderr)
+
         # Cleanup: terminate the process gracefully
         if process.returncode is None:
             # Send SIGINT (Ctrl+C) for graceful shutdown