Negative message numbers?

[Dave Abrahams]

I'm still seeing this failure, and I was surprised to notice it trying
to copy messages numbered -1 and -2.  Is that normal?  What does it
mean?

--8<---------------cut here---------------start------------->8---
 Copy message -1 Maildir[] -> Gmail[INBOX]
 Establishing connection to imap.gmail.com:993.
 ERROR: command: APPEND => socket error: <class 'socket.error'> - [Errno 54] Connection reset by peer
 Establishing connection to imap.gmail.com:993.
 ERROR: Saving msg in folder 'INBOX', repository 'BoostProRemote' failed. Server reponded: command: APPEND => socket error: <class 'socket.error'> - [Errno 54] Connection reset by peer
Message content was: Delivered-To: dave at boostpro.com
Received: by 10.52.162.166 with SMTP id yb6cs51861vdb;
        Fri, 19 Aug 2011 08:57:21 -0700 (PDT)
Received: by 1...ailed; fix conflicts and then commit the result.
 Copy message -2 Maildir[] -> Gmail[INBOX]
Account sync PersonalGMail:
 Next refresh in 2210 seconds
Folder sync [BoostPro]:
 Establishing connection to imap.gmail.com:993.
 ERROR: command: APPEND => socket error: <type 'exceptions.IOError'> - Too many read 0
 Establishing connection to imap.gmail.com:993.
Account sync Spam:
 Next refresh in 2570 seconds
Folder sync [BoostPro]:
 ERROR: Saving msg in folder 'INBOX', repository 'BoostProRemote' failed. Server reponded: command: APPEND => socket error: <type 'exceptions.IOError'> - Too many read 0
Message content was: Delivered-To: dave at boostpro.com
Received: by 10.52.168.97 with SMTP id zv1cs24464vdb;
        Wed, 31 Aug 2011 13:22:48 -0700 (PDT)
Received: by 10....com
------------=_1314822362-17042-3--
--8<---------------cut here---------------end--------------->8---

-- 
Dave Abrahams
BoostPro Computing
http://www.boostpro.com