exim-daemon-heavy-4.34-6 and spamassassin

I'm having an issue where I cannot get $spam_report to show up in the smtp 
headers.

#
# Put headers in all messages (no matter if spam or not)
  warn message = X-Spam-Score: $spam_score ($spam_bar)
        condition = ${if <{$message_size}{128K} {yes}{no}}
        spam = spamd:true
  warn  message = X-Spam-Report: $spam_report
        condition = ${if <{$message_size}{128K} {yes}{no}}
        spam = spamd:true

The X-Spam-Score: $spam_score ($spam_bar) shows up, but not the X-Spam-Report: 
$spam_report.

I'm assuming this is a exiscan issue. Why? if I spamassassin -t < test.msg I 
get what I'd expect from spamassassin.

$ spamassassin -t < /var/tmp/test.msg
<snip>
X-Spam-Checker-Version: SpamAssassin 3.0.0 (2004-09-13) on XXXXXXXXXXXX
X-Spam-Level:
X-Spam-Status: No, score=0.0 required=5.0 tests=none autolearn=ham
        version=3.0.0

Spam detection software, running on the system "xxxxxxxxxxxx", has
identified this incoming email as possible spam.  The original message
has been attached to this so you can view it (if it isn't spam) or label
similar future email.  If you have any questions, see
the administrator of that system for details.

Content preview:  testing2 sdfsd sd fas asd afsd fasdf asdf asdf asdf
  asdf [...]

Content analysis details:   (0.0 points, 5.0 required)

 pts rule name              description
---- ---------------------- --------------------------------------------------

Any help would be appreciated. Thanks.

-- 
Bob Tanner <[email protected]>          | Phone : (952)943-8700
http://www.mn-linux.org, Minnesota, Linux | Fax   : (952)943-8500
Key fingerprint = AB15 0BDF BCDE 4369 5B42  1973 7CF1 A709 2CC1 B288