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https://issues.apache.org/jira/browse/MPMD-240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16080528#comment-16080528
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Matt Nelson commented on MPMD-240:
----------------------------------
I haven't been able to reproduce with 3.5 which I think it because of the
maven-core extension reservations on org.slf4j.*
http://maven.apache.org/ref/3.5.0/maven-core/core-extensions.html
{noformat}
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-pmd-plugin:3.8:pmd (pmd) on project my-project:
Execution pmd of goal org.apache.maven.plugins:maven-pmd-plugin:3.8:pmd failed:
An API incompatibility was encountered while executing
org.apache.maven.plugins:maven-pmd-plugin:3.8:pmd:
java.lang.IncompatibleClassChangeError: org.slf4j.MDC and
org.slf4j.MDC$MDCCloseable disagree on InnerClasses attribute
[ERROR] -----------------------------------------------------
[ERROR] realm = plugin>org.apache.maven.plugins:maven-pmd-plugin:3.8
[ERROR] strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
[ERROR] urls[0] =
file:/Users/myuser/.m2/repository/org/apache/maven/plugins/maven-pmd-plugin/3.8/maven-pmd-plugin-3.8.jar
[ERROR] urls[1] =
file:/Users/myuser/.m2/repository/net/sourceforge/pmd/pmd-core/5.8.1/pmd-core-5.8.1.jar
[ERROR] urls[2] =
file:/Users/myuser/.m2/repository/com/beust/jcommander/1.48/jcommander-1.48.jar
[ERROR] urls[3] =
file:/Users/myuser/.m2/repository/jaxen/jaxen/1.1.6/jaxen-1.1.6.jar
[ERROR] urls[4] =
file:/Users/myuser/.m2/repository/net/java/dev/javacc/javacc/5.0/javacc-5.0.jar
[ERROR] urls[5] =
file:/Users/myuser/.m2/repository/net/sourceforge/saxon/saxon/9.1.0.8/saxon-9.1.0.8.jar
[ERROR] urls[6] =
file:/Users/myuser/.m2/repository/org/apache/commons/commons-lang3/3.4/commons-lang3-3.4.jar
[ERROR] urls[7] =
file:/Users/myuser/.m2/repository/org/ow2/asm/asm/5.0.4/asm-5.0.4.jar
[ERROR] urls[8] =
file:/Users/myuser/.m2/repository/com/google/code/gson/gson/2.5/gson-2.5.jar
[ERROR] urls[9] =
file:/Users/myuser/.m2/repository/net/sourceforge/saxon/saxon/9.1.0.8/saxon-9.1.0.8-dom.jar
[ERROR] urls[10] =
file:/Users/myuser/.m2/repository/net/sourceforge/pmd/pmd-java/5.8.1/pmd-java-5.8.1.jar
[ERROR] urls[11] =
file:/Users/myuser/.m2/repository/net/sourceforge/pmd/pmd-javascript/5.8.1/pmd-javascript-5.8.1.jar
[ERROR] urls[12] =
file:/Users/myuser/.m2/repository/org/mozilla/rhino/1.7.7/rhino-1.7.7.jar
[ERROR] urls[13] =
file:/Users/myuser/.m2/repository/net/sourceforge/pmd/pmd-jsp/5.8.1/pmd-jsp-5.8.1.jar
[ERROR] urls[14] =
file:/Users/myuser/.m2/repository/org/slf4j/jcl-over-slf4j/1.7.5/jcl-over-slf4j-1.7.5.jar
[ERROR] urls[15] =
file:/Users/myuser/.m2/repository/org/slf4j/slf4j-jdk14/1.7.5/slf4j-jdk14-1.7.5.jar
[ERROR] urls[16] =
file:/Users/myuser/.m2/repository/org/slf4j/slf4j-nop/1.7.5/slf4j-nop-1.7.5.jar
[ERROR] urls[17] =
file:/Users/myuser/.m2/repository/backport-util-concurrent/backport-util-concurrent/3.1/backport-util-concurrent-3.1.jar
[ERROR] urls[18] =
file:/Users/myuser/.m2/repository/org/codehaus/plexus/plexus-interpolation/1.11/plexus-interpolation-1.11.jar
[ERROR] urls[19] =
file:/Users/myuser/.m2/repository/junit/junit/3.8.1/junit-3.8.1.jar
[ERROR] urls[20] =
file:/Users/myuser/.m2/repository/org/apache/maven/doxia/doxia-sink-api/1.4/doxia-sink-api-1.4.jar
[ERROR] urls[21] =
file:/Users/myuser/.m2/repository/org/apache/maven/doxia/doxia-logging-api/1.4/doxia-logging-api-1.4.jar
[ERROR] urls[22] =
file:/Users/myuser/.m2/repository/org/apache/maven/doxia/doxia-decoration-model/1.4/doxia-decoration-model-1.4.jar
[ERROR] urls[23] =
file:/Users/myuser/.m2/repository/org/codehaus/plexus/plexus-component-annotations/1.6/plexus-component-annotations-1.6.jar
[ERROR] urls[24] =
file:/Users/myuser/.m2/repository/org/apache/maven/doxia/doxia-site-renderer/1.4/doxia-site-renderer-1.4.jar
[ERROR] urls[25] =
file:/Users/myuser/.m2/repository/org/apache/maven/doxia/doxia-core/1.4/doxia-core-1.4.jar
[ERROR] urls[26] =
file:/Users/myuser/.m2/repository/xerces/xercesImpl/2.9.1/xercesImpl-2.9.1.jar
[ERROR] urls[27] =
file:/Users/myuser/.m2/repository/xml-apis/xml-apis/1.3.04/xml-apis-1.3.04.jar
[ERROR] urls[28] =
file:/Users/myuser/.m2/repository/commons-lang/commons-lang/2.4/commons-lang-2.4.jar
[ERROR] urls[29] =
file:/Users/myuser/.m2/repository/org/apache/maven/doxia/doxia-module-xhtml/1.4/doxia-module-xhtml-1.4.jar
[ERROR] urls[30] =
file:/Users/myuser/.m2/repository/org/apache/maven/doxia/doxia-module-fml/1.4/doxia-module-fml-1.4.jar
[ERROR] urls[31] =
file:/Users/myuser/.m2/repository/org/codehaus/plexus/plexus-i18n/1.0-beta-7/plexus-i18n-1.0-beta-7.jar
[ERROR] urls[32] =
file:/Users/myuser/.m2/repository/org/codehaus/plexus/plexus-velocity/1.1.7/plexus-velocity-1.1.7.jar
[ERROR] urls[33] =
file:/Users/myuser/.m2/repository/org/apache/velocity/velocity/1.5/velocity-1.5.jar
[ERROR] urls[34] = file:/Users/myuser/.m2/repository/oro/oro/2.0.8/oro-2.0.8.jar
[ERROR] urls[35] =
file:/Users/myuser/.m2/repository/org/apache/velocity/velocity-tools/2.0/velocity-tools-2.0.jar
[ERROR] urls[36] =
file:/Users/myuser/.m2/repository/commons-beanutils/commons-beanutils/1.7.0/commons-beanutils-1.7.0.jar
[ERROR] urls[37] =
file:/Users/myuser/.m2/repository/commons-digester/commons-digester/1.8/commons-digester-1.8.jar
[ERROR] urls[38] =
file:/Users/myuser/.m2/repository/commons-chain/commons-chain/1.1/commons-chain-1.1.jar
[ERROR] urls[39] =
file:/Users/myuser/.m2/repository/sslext/sslext/1.2-0/sslext-1.2-0.jar
[ERROR] urls[40] =
file:/Users/myuser/.m2/repository/org/apache/struts/struts-core/1.3.8/struts-core-1.3.8.jar
[ERROR] urls[41] =
file:/Users/myuser/.m2/repository/antlr/antlr/2.7.2/antlr-2.7.2.jar
[ERROR] urls[42] =
file:/Users/myuser/.m2/repository/org/apache/struts/struts-taglib/1.3.8/struts-taglib-1.3.8.jar
[ERROR] urls[43] =
file:/Users/myuser/.m2/repository/org/apache/struts/struts-tiles/1.3.8/struts-tiles-1.3.8.jar
[ERROR] urls[44] =
file:/Users/myuser/.m2/repository/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1.jar
[ERROR] urls[45] =
file:/Users/myuser/.m2/repository/org/apache/maven/reporting/maven-reporting-api/3.0/maven-reporting-api-3.0.jar
[ERROR] urls[46] =
file:/Users/myuser/.m2/repository/org/apache/maven/reporting/maven-reporting-impl/2.3/maven-reporting-impl-2.3.jar
[ERROR] urls[47] =
file:/Users/myuser/.m2/repository/org/apache/maven/shared/maven-shared-utils/0.6/maven-shared-utils-0.6.jar
[ERROR] urls[48] =
file:/Users/myuser/.m2/repository/com/google/code/findbugs/jsr305/2.0.1/jsr305-2.0.1.jar
[ERROR] urls[49] =
file:/Users/myuser/.m2/repository/commons-validator/commons-validator/1.3.1/commons-validator-1.3.1.jar
[ERROR] urls[50] =
file:/Users/myuser/.m2/repository/org/codehaus/plexus/plexus-resources/1.0.1/plexus-resources-1.0.1.jar
[ERROR] urls[51] =
file:/Users/myuser/.m2/repository/org/codehaus/plexus/plexus-utils/3.0.24/plexus-utils-3.0.24.jar
[ERROR] urls[52] =
file:/Users/myuser/.m2/repository/org/apache/httpcomponents/httpclient/4.3.5/httpclient-4.3.5.jar
[ERROR] urls[53] =
file:/Users/myuser/.m2/repository/org/apache/httpcomponents/httpcore/4.3.2/httpcore-4.3.2.jar
[ERROR] urls[54] =
file:/Users/myuser/.m2/repository/commons-logging/commons-logging/1.1.3/commons-logging-1.1.3.jar
[ERROR] urls[55] =
file:/Users/myuser/.m2/repository/commons-codec/commons-codec/1.6/commons-codec-1.6.jar
[ERROR] urls[56] =
file:/Users/myuser/.m2/repository/commons-io/commons-io/2.5/commons-io-2.5.jar
[ERROR] Number of foreign imports: 1
[ERROR] import: Entry[import from realm ClassRealm[maven.api, parent: null]]
{noformat}
> Migrate plugin to Maven 3.0
> ---------------------------
>
> Key: MPMD-240
> URL: https://issues.apache.org/jira/browse/MPMD-240
> Project: Maven PMD Plugin
> Issue Type: Bug
> Components: PMD
> Affects Versions: 3.8
> Reporter: Matt Nelson
>
> Cloning from MCHECKSTYLE-335 to address the same slf4j issues based on the
> old maven-core-2.2.1 dependencies.
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