diff --git a/poky/meta/lib/oe/utils.py b/poky/meta/lib/oe/utils.py
index a4fd79c..d686ce1 100644
--- a/poky/meta/lib/oe/utils.py
+++ b/poky/meta/lib/oe/utils.py
@@ -1,3 +1,7 @@
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
+
 import subprocess
 import multiprocessing
 import traceback
@@ -324,7 +328,12 @@
     if errors:
         msg = ""
         for (e, tb) in errors:
-            msg = msg + str(e) + ": " + str(tb) + "\n"
+            if isinstance(e, subprocess.CalledProcessError) and e.output:
+                msg = msg + str(e) + "\n"
+                msg = msg + "Subprocess output:"
+                msg = msg + e.output.decode("utf-8", errors="ignore")
+            else:
+                msg = msg + str(e) + ": " + str(tb) + "\n"
         bb.fatal("Fatal errors occurred in subprocesses:\n%s" % msg)
     return results