Could not find the attribute 'mail' in LDAP

With mail attribute set correctly in LDAP and configured in Fisheye, the following warning is being reported in the logs:

2013-08-16 11:03:06,085 WARN  [qtp524047272-1548 ] fisheye LDAPAuth-extract - Could not find the attribute 'mail' in LDAP

everytime a sync is triggered.
There is no reason for the warning as the email addresses are being fetched as expected from LDAP.

Workaround

Removing this attribute from Fisheye config fixes the issue.