Cisco CCNP and CCIE Study Notes

Here is some debug output from debug ip ssh on a Cisco router -

01:38:40: SSH0: starting SSH control process
01:38:40: SSH0: sent protocol version id SSH-1.5-Cisco-1.25
01:38:40: SSH0: protocol version id is - SSH-1.5-Cisco-1.25
01:38:40: SSH0: SSH_SMSG_PUBLIC_KEY msg
01:38:40: SSH0: SSH_CMSG_SESSION_KEY msg - length 112, type 0x03
01:38:40: SSH: RSA decrypt started
01:38:40: SSH: RSA decrypt finished
01:38:40: SSH: RSA decrypt started
01:38:40: SSH: RSA decrypt finished
01:38:40: SSH0: sending encryption confirmation
01:38:40: SSH0: keys exchanged and encryption on
01:38:40: %SSH-5-SSH_SESSION: SSH Session request from 10.10.10.1 (tty = 0) using crypto cipher 'DES' Succeeded
01:38:40: SSH0: SSH_CMSG_USER message received
01:38:40: SSH0: authentication request for userid R1
01:38:40: SSH0: SSH_SMSG_FAILURE message sent

Note the final reference to a failure message being sent. Is this always a problem? Could the SSH connection have been successful in spite of this failure message?