[slf4j-user] compiling slfj4 -Test org.slf4j.VersionMi, smatchTest failed

[zoro]

hello,
I am trying to compile slfj4 to use with red 5. when I use
/integration/build.xml -> [$user] ant

the following error occurs
slf4j/slf4j-1.5.8/integration/build.xml:64: Test 
org.slf4j.VersionMismatchTest failed

I have tried unit 3.8.1 & 4.7
any ideas please?

Debian Linux version 4.1.1
Apache Ant version 1.7.1 compiled on June 27 2008
java version "1.6.0_16"

Thanks
Art