From c8a1cbcc6db4c8c1144e9d66c67b3096edac32bf Mon Sep 17 00:00:00 2001
From: Ibrahim Halatci <ihalatci@microsoft.com>
Date: Mon, 29 Jun 2026 13:48:01 +0300
Subject: [PATCH] diag: surface stdout+stderr on build_package failure

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 packaging_automation/citus_package.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/packaging_automation/citus_package.py b/packaging_automation/citus_package.py
index 59fee1c9..b039abb9 100644
--- a/packaging_automation/citus_package.py
+++ b/packaging_automation/citus_package.py
@@ -367,7 +367,11 @@ def build_package(
     if output.stdout:
         print("Output:" + output.stdout)
     if output.returncode != 0:
-        raise ValueError(output.stderr)
+        raise ValueError(
+            f"Build failed (rc={output.returncode}).\n"
+            f"STDOUT:\n{output.stdout}\n"
+            f"STDERR:\n{output.stderr}"
+        )
 
     if input_output_parameters.output_validation:
         validate_output(