add debug line

Author: lia-viam

test_package/conanfile.py

@@ -2,6 +2,7 @@
 import os
 
 from conan import ConanFile
+from conan.api.output import ConanOutput
 from conan.errors import ConanException
 from conan.tools.cmake import CMake, cmake_layout
 from conan.tools.build import can_run
@@ -40,5 +41,7 @@ def test(self):
                 out = proc.communicate()[0]
                 pass
 
+            ConanOutput("test package").writeln(out)
+
             if f"Module listening on {sock}" not in out:
                 raise ConanException(f"Simple example failed to start module listening")