Index: tests/pybin/tools.py
===================================================================
--- tests/pybin/tools.py	(revision a2f2fda0a7a5501347525d2e999fe2d7d54e5fba)
+++ tests/pybin/tools.py	(revision e91a255f5dee71cf7d5765c7741c5147db2d26e2)
@@ -73,5 +73,5 @@
 					)
 
-					return proc.returncode, out.decode("utf-8") if out else None
+					return proc.returncode, out.decode("latin-1") if out else None
 				except subprocess.TimeoutExpired:
 					if settings.timeout2gdb: