Guard against bad folder permissions when walking stats directory.
Guard against bad folder permissions when walking stats directory.

Talkdesk/graphite-web,Krylon360/evernote-graphite-web,Talkdesk/graphite-web,evernote/graphite-web,Talkdesk/graphite-web,Krylon360/evernote-graphite-web,Talkdesk/graphite-web,evernote/graphite-web,Krylon360/evernote-graphite-web,evernote/graphite-web,Talkdesk/graphite-web,Krylon360/evernote-graphite-web,Talkdesk/graphite-web,Krylon360/evernote-graphite-web,evernote/graphite-web,evernote/graphite-web,Krylon360/evernote-graphite-web