Log Name: Application
Source: Microsoft-SharePoint Products-SharePoint Server Search
Date: 7/29/2013 10:53:09 PM
Event ID: 1314
Task Category: Crawler:Gatherer Plugin
The start address sps3://sp2013:81 cannot be crawled.
Context: Application 'Search_Service_Application', Catalog 'Portal_Content'
Access is denied. Verify that either the Default Content Access Account has access to this repository, or add a crawl rule to crawl this repository. If the repository being crawled is a SharePoint repository, verify that the account you are using has "Full Read" permissions on the SharePoint Web Application being crawled. (0x80041205)
The suggestion above is great, but does not help as it has been a case already.
The solution is to add crawler account to User Profile Service Admins with right to get data from People Data: