[tune] hotfix log_once (#10069)

python/ray/tune/suggest/suggestion.py

@@ -198,7 +198,7 @@ class Searcher:
         try:
             self.save(tmp_search_ckpt_path)
         except NotImplementedError:
-            with log_once("suggest:save_to_dir"):
+            if log_once("suggest:save_to_dir"):
                 logger.warning(
                     "save not implemented for Searcher. Skipping save.")
             success = False

python/ray/tune/syncer.py

@@ -44,7 +44,7 @@ def log_sync_template(options=""):
         unavailable.
     """
     if not distutils.spawn.find_executable("rsync"):
-        with log_once("tune:rsync"):
+        if log_once("tune:rsync"):
             logger.error("Log sync requires rsync to be installed.")
         return None
     global _log_sync_warned