Reactor Dependency Convergence

Legend:
[Error] At least one dependency has a differing version of the dependency or has SNAPSHOT dependencies.

Statistics:
Number of modules: 14
Number of dependencies (NOD): 46
Number of unique artifacts (NOA): 51
Number of version-conflicting artifacts (NOC): 2
Number of SNAPSHOT artifacts (NOS): 0
Convergence (NOD/NOA): [Error] 90 %
Ready for release (100% convergence and no SNAPSHOTS): [Error] Error
You do not have 100% convergence.

Dependencies used in modules

com.google.guava:guava

[Error]
16.0.1
  1. org.apache.maven.resolver:maven-resolver-demo-snippets:jar:1.3.1
    \- org.sonatype.sisu:sisu-guice:jar:no_aop:3.2.6:compile
       \- (com.google.guava:guava:jar:16.0.1:compile - omitted for conflict with 20.0)

20.0
  1. org.apache.maven.resolver:maven-resolver-demo-snippets:jar:1.3.1
    \- org.apache.maven:maven-model-builder:jar:3.5.0:compile
       \- com.google.guava:guava:jar:20.0:compile

org.codehaus.plexus:plexus-utils

[Error]
3.0.17
  1. org.apache.maven.resolver:maven-resolver-transport-wagon:jar:1.3.1
    \- org.eclipse.sisu:org.eclipse.sisu.plexus:jar:0.3.3:compile
       \- (org.codehaus.plexus:plexus-utils:jar:3.0.17:compile - omitted for conflict with 3.1.0)

3.0.24
  1. org.apache.maven.resolver:maven-resolver-transport-wagon:jar:1.3.1
    \- org.apache.maven.wagon:wagon-provider-api:jar:3.0.0:compile
       \- (org.codehaus.plexus:plexus-utils:jar:3.0.24:compile - omitted for conflict with 3.1.0)

3.1.0
  1. org.apache.maven.resolver:maven-resolver-transport-wagon:jar:1.3.1
    \- org.codehaus.plexus:plexus-utils:jar:3.1.0:compile