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https://issues.apache.org/jira/browse/MDEP-715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17908895#comment-17908895
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Elliotte Rusty Harold commented on MDEP-715:
--------------------------------------------
See https://github.com/apache/maven-changes-plugin/pull/105
Briefly, a project can fix this by matching the Hamcrest version to the JUnit
version. That is, do not upgrade hamcrest to 3.0 but stick with 1.3.
> Hamcrest used and unused
> ------------------------
>
> Key: MDEP-715
> URL: https://issues.apache.org/jira/browse/MDEP-715
> Project: Maven Dependency Plugin
> Issue Type: Bug
> Components: analyze
> Reporter: Elliotte Rusty Harold
> Priority: Major
> Labels: S2, intern
>
> This is something I've seen when analyzing several Maven plugins. For
> example, maven-shared-utils circa July 20, 2020:
>
> [WARNING] Used undeclared dependencies found:
> [WARNING] org.hamcrest:hamcrest:jar:2.2:test
> [WARNING] org.eclipse.sisu:org.eclipse.sisu.plexus:jar:0.0.0.M2a:test
> [WARNING] Unused declared dependencies found:
> [WARNING] org.hamcrest:hamcrest-core:jar:2.2:test
> [WARNING] org.apache.maven:maven-core:jar:3.1.0:test
> [WARNING] org.codehaus.plexus:plexus-container-default:jar:2.1.0:provided
>
> Easy fix, right? don't declare org.hamcrest:hamcrest-core:jar:2.2:test and
> instead declare org.hamcrest:hamcrest:jar:2.2:test
>
> But when I do that:
>
> [WARNING] Used undeclared dependencies found:
> [WARNING] org.hamcrest:hamcrest-core:jar:1.3:test
> [WARNING] org.eclipse.sisu:org.eclipse.sisu.plexus:jar:0.0.0.M2a:test
> [WARNING] Unused declared dependencies found:
> [WARNING] org.hamcrest:hamcrest:jar:2.2:test
> [WARNING] org.apache.maven:maven-core:jar:3.1.0:test
> [WARNING] org.codehaus.plexus:plexus-container-default:jar:2.1.0:provided
>
> Figure out what's going on here and fix it. Is hamcrest-core needed and used
> or not? is hamcrest needed and used or not? Be consistent.
>
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