Problems with Ivy and Spring Framework 3.0.0.M3

I'm trying to use the springframework 3.0.0.M3 release which is hosted in an ivy repository

repositorys {
    ...    
    add(new org.apache.ivy.plugins.resolver.URLResolver()) {
    	name = 'spring-milestones'
    	addIvyPattern "http://repository.springsource.com/ivy/bundles/milestone/[organisation]/[module]/[revision]/[artifact]-[revision].[ext]"
    	addArtifactPattern "http://repository.springsource.com/ivy/bundles/milestone/[organisation]/[module]/[revision]/[artifact]-[revision].[ext]"
    }
}

dependencies {
	...
	compile "org.springframework:org.springframework.core:3.0.0.M3"
	compile "org.springframework:org.springframework.context:3.0.0.M3"
	compile "org.springframework:org.springframework.beans:3.0.0.M3"
	compile "org.springframework:org.springframework.web:3.0.0.M3"
	compile "org.springframework:org.springframework.web.servlet:3.0.0.M3"
	...
}

The files seem to be downloading OK but I end up with the following error.

downloading (5 KB) http://repository.springsource.com/ivy/bundles/milestone/org.springframework/org.springframework.web/3.0.0.M3/ivy-3.0.0.M3.xml
...
downloading (6 KB) http://repository.springsource.com/ivy/bundles/milestone/org.springframework/org.springframework.web.servlet/3.0.0.M3/ivy-3.0.0.M3.xml
.....
:: problems summary ::
:::: WARNINGS
		::::::::::::::::::::::::::::::::::::::::::::::

		::          UNRESOLVED DEPENDENCIES         ::

		::::::::::::::::::::::::::::::::::::::::::::::

		:: org.springframework#org.springframework.web;3.0.0.M3: configuration not found in org.springframework#org.springframework.web;3.0.0.M3: 'default'. It was required from unspecified#Residue;unspecified compile

		:: org.springframework#org.springframework.web.servlet;3.0.0.M3: configuration not found in org.springframework#org.springframework.web.servlet;3.0.0.M3: 'default'. It was required from unspecified#Residue;unspecified compile

		::::::::::::::::::::::::::::::::::::::::::::::

I suspect this is an Ivy Config / Spring issue rather than anything to do with gradle, but not being familiar with Ivy I haven't got a clue what it means, or how to fix it. Any help appreciated. S