I upgraded Confluence to 6.0.1. Also I use Crowd for SSO. All worked fine before upgrade. After upgrade it seems work good too, I can login into Confluence. But I the following WARNs have appeared in atlassian-confluence.log:
WARN [Caesium-1-4] [client.hash.reader.RemoteHashingInstructionsReader] readInstructions Unable to read remote instructions with key 'uid.onewayhash'.
WARN [Caesium-1-4] [analytics.client.hash.BcryptAnalyticsEmailHasher] create No instructions for hashing could be found.
What do this WARNs mean? How I can fix that WARNs?
I tried to search the solution in internet, but did not find anything useful.