gh-99242 Ignore error when running regression tests under certain conditions. (GH-121663)

Co-Authored-By: Kevin Diem <kg.diem@gmail.com>

Lib/test/libregrtest/logger.py

@@ -43,7 +43,10 @@ class Logger:
 
     def get_load_avg(self) -> float | None:
         if hasattr(os, 'getloadavg'):
+            try:
                 return os.getloadavg()[0]
+            except OSError:
+                pass
         if self.win_load_tracker is not None:
             return self.win_load_tracker.getloadavg()
         return None

Misc/NEWS.d/next/Tests/2024-07-13-11-04-44.gh-issue-99242.aGxnwz.rst

@@ -0,0 +1,3 @@
+:func:`os.getloadavg` may throw :exc:`OSError` when running regression tests
+under certain conditions (e.g. chroot). This error is now caught and
+ignored, since reporting load average is optional.