I am getting the following error:
16:23:40 P4: Unable to connect: com.perforce.p4java.exception.ConnectionException: The authenticity of 'perforce:1666' can't be established,16:23:40 this may be your first attempt to connect to this Perforce server.16:23:40 The fingerprint for the public key sent to your client is*16:23:40* 59:**:88*16:23:40 To allow connection use the 'addTrust' method with the 'autoAccept' option.16:23:40 P4: Connection retry: 1*16:23:43* P4: Connection retry giving up...16:23:43 P4: Unable to setup workspace: java.lang.NullPointerException*16:23:43* P4: Unable to close Perforce connection.16:23:43 ERROR: P4: Unable to setup workspace: java.lang.NullPointerException
I'm not sure if this is always the case, but it seems to only happen:

• on system with existing workspace
• the first time the build is triggered after updating P4Credentials to enable SSL
• the error does not occur after re-running on the same node the error occurred on

P4 plugin version: 1.6.1