**[Guillaume Nodet](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=gnt)** opened **[MBUILDCACHE-6](https://issues.apache.org/jira/browse/MBUILDCACHE-6?redirect=false)** and commented --- This issue is a sub-task of [MBUILDCACHE-1](https://issues.apache.org/jira/browse/MBUILDCACHE-1) **Issue Links:** - [MNG-8121](https://issues.apache.org/jira/browse/MNG-8121) NullPointerException at org.apache.maven.artifact.repository.metadata.Metadata.merge (Metadata.java:293)