{"action":"opened","issue":{"url":"https://api.github.com/repos/flatiron/winston/issues/530","labels_url":"https://api.github.com/repos/flatiron/winston/issues/530/labels{/name}","comments_url":"https://api.github.com/repos/flatiron/winston/issues/530/comments","events_url":"https://api.github.com/repos/flatiron/winston/issues/530/events","html_url":"https://github.com/flatiron/winston/issues/530","id":55680405,"number":530,"title":"The nature of rotationFormat is broken","user":{"login":"jcrugzz","id":592149,"avatar_url":"https://avatars.githubusercontent.com/u/592149?v=3","gravatar_id":"","url":"https://api.github.com/users/jcrugzz","html_url":"https://github.com/jcrugzz","followers_url":"https://api.github.com/users/jcrugzz/followers","following_url":"https://api.github.com/users/jcrugzz/following{/other_user}","gists_url":"https://api.github.com/users/jcrugzz/gists{/gist_id}","starred_url":"https://api.github.com/users/jcrugzz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jcrugzz/subscriptions","organizations_url":"https://api.github.com/users/jcrugzz/orgs","repos_url":"https://api.github.com/users/jcrugzz/repos","events_url":"https://api.github.com/users/jcrugzz/events{/privacy}","received_events_url":"https://api.github.com/users/jcrugzz/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/flatiron/winston/labels/confirmed-bug","name":"confirmed-bug","color":"444444"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-01-27T21:57:33Z","updated_at":"2015-01-27T21:57:33Z","closed_at":null,"body":"We need to store a set of file names for the files that are created so that they can be properly deleted. See the comment [here](https://github.com/flatiron/winston/blob/master/lib/winston/transports/file.js#L532-L539)."}}