fix: try to fix CI hangs

Author: not-matthias

bench/bench.py

@@ -2,7 +2,7 @@
 # /// script
 # requires-python = ">=3.9"
 # dependencies = [
-#     "pytest>=8.0",
+#     "pytest>=8.4.2",
 #     "pytest-codspeed>=4.2.0",
 # ]
 # ///
@@ -12,6 +12,7 @@
 import shlex
 import subprocess
 from pathlib import Path
+import time
 
 import pytest
 
@@ -53,7 +54,7 @@ def run_valgrind(self, *args: str) -> None:
         Args:
             *args: Valgrind arguments
         """
-        callgrind_output = self.output_dir / f"callgrind.{os.getpid()}"
+        callgrind_output = self.output_dir / f"callgrind.{os.getpid()}.{time.time_ns()}"
 
         cmd = [
             self.valgrind_path,
@@ -63,10 +64,16 @@ def run_valgrind(self, *args: str) -> None:
             *shlex.split(self.cmd),
         ]
 
-        result = subprocess.run(cmd)
+        # Add timeout and capture output to prevent hanging and buffering issues
+        result = subprocess.run(
+            cmd,
+            capture_output=True,
+            text=True,
+        )
         if result.returncode != 0:
             raise RuntimeError(
-                f"Valgrind execution failed with code {result.returncode}"
+                f"Valgrind execution failed with code {result.returncode}\n"
+                f"stderr: {result.stderr}"
             )
 
         # Clean up