Fix #494

powerline/lib/vcs/__init__.py

@@ -193,7 +193,10 @@ def tree_status(repo, logger):
 def guess(path):
 	for directory in generate_directories(path):
 		for vcs, vcs_dir, check in vcs_props:
-			if check(os.path.join(directory, vcs_dir)):
+			repo_dir = os.path.join(directory, vcs_dir)
+			if check(repo_dir):
+				if os.path.isdir(repo_dir) and not os.access(repo_dir, os.X_OK):
+					continue
 				try:
 					if vcs not in globals():
 						globals()[vcs] = getattr(__import__('powerline.lib.vcs', fromlist=[vcs]), vcs)