[ 
https://issues.apache.org/jira/browse/MNG-5817?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jim Divine updated MNG-5817:
----------------------------
    Description: 
This works with 3.2.5, but fails with 3.3.1 and 3.3.3.

Error output including stacktrace below.

{noformat}
[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building platform.prodenv 7.3.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ platform.prodenv ---
[INFO]
[INFO] --- gradle-maven-plugin:1.0.5:invoke (clean) @ platform.prodenv ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.441 s
[INFO] Finished at: 2015-04-29T13:58:11-05:00
[INFO] Final Memory: 10M/310M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.fortasoft:gradle-maven-plugin:1.0.5:invoke 
(clean) on project platform.prodenv: Execution clean of goal 
org.fortasoft:gradle-maven-plugin:1.0.5:invoke failed: A required class was 
missing while executing org.fortasoft:gradle-maven-plugin:1.0.5:invoke: 
org/slf4j/impl/NewMojoLogger
[ERROR] -----------------------------------------------------
[ERROR] realm =    plugin>org.fortasoft:gradle-maven-plugin:1.0.5
[ERROR] strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
[ERROR] urls[0] = 
file:/Users/jdivine/.m2/repository/org/fortasoft/gradle-maven-plugin/1.0.5/gradle-maven-plugin-1.0.5.jar
[ERROR] urls[1] = 
file:/Users/jdivine/.m2/repository/org/gradle/gradle-tooling-api/1.6/gradle-tooling-api-1.6.jar
[ERROR] urls[2] = 
file:/Users/jdivine/.m2/repository/org/codehaus/groovy/groovy-all/2.0.6/groovy-all-2.0.6.jar
[ERROR] urls[3] = 
file:/Users/jdivine/.m2/repository/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar
[ERROR] Number of foreign imports: 1
[ERROR] import: Entry[import  from realm ClassRealm[maven.api, parent: null]]
[ERROR]
[ERROR] -----------------------------------------------------
[ERROR] -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal 
org.fortasoft:gradle-maven-plugin:1.0.5:invoke (clean) on project 
platform.prodenv: Execution clean of goal 
org.fortasoft:gradle-maven-plugin:1.0.5:invoke failed: A required class was 
missing while executing org.fortasoft:gradle-maven-plugin:1.0.5:invoke: 
org/slf4j/impl/NewMojoLogger
-----------------------------------------------------
realm =    plugin>org.fortasoft:gradle-maven-plugin:1.0.5
strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
urls[0] = 
file:/Users/jdivine/.m2/repository/org/fortasoft/gradle-maven-plugin/1.0.5/gradle-maven-plugin-1.0.5.jar
urls[1] = 
file:/Users/jdivine/.m2/repository/org/gradle/gradle-tooling-api/1.6/gradle-tooling-api-1.6.jar
urls[2] = 
file:/Users/jdivine/.m2/repository/org/codehaus/groovy/groovy-all/2.0.6/groovy-all-2.0.6.jar
urls[3] = 
file:/Users/jdivine/.m2/repository/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar
Number of foreign imports: 1
import: Entry[import  from realm ClassRealm[maven.api, parent: null]]

-----------------------------------------------------

        at 
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:224)
        at 
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
        at 
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
        at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
        at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
        at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
        at 
org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
        at org.apache.maven.cli.MavenCli.execute(MavenCli.java:862)
        at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:286)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:197)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at 
org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
        at 
org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
        at 
org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
        at 
org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution clean of 
goal org.fortasoft:gradle-maven-plugin:1.0.5:invoke failed: A required class 
was missing while executing org.fortasoft:gradle-maven-plugin:1.0.5:invoke: 
org/slf4j/impl/NewMojoLogger
-----------------------------------------------------
realm =    plugin>org.fortasoft:gradle-maven-plugin:1.0.5
strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
urls[0] = 
file:/Users/jdivine/.m2/repository/org/fortasoft/gradle-maven-plugin/1.0.5/gradle-maven-plugin-1.0.5.jar
urls[1] = 
file:/Users/jdivine/.m2/repository/org/gradle/gradle-tooling-api/1.6/gradle-tooling-api-1.6.jar
urls[2] = 
file:/Users/jdivine/.m2/repository/org/codehaus/groovy/groovy-all/2.0.6/groovy-all-2.0.6.jar
urls[3] = 
file:/Users/jdivine/.m2/repository/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar
Number of foreign imports: 1
import: Entry[import  from realm ClassRealm[maven.api, parent: null]]

-----------------------------------------------------

        at 
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:168)
        at 
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
        ... 20 more
Caused by: org.apache.maven.plugin.PluginContainerException: A required class 
was missing while executing org.fortasoft:gradle-maven-plugin:1.0.5:invoke: 
org/slf4j/impl/NewMojoLogger
-----------------------------------------------------
realm =    plugin>org.fortasoft:gradle-maven-plugin:1.0.5
strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
urls[0] = 
file:/Users/jdivine/.m2/repository/org/fortasoft/gradle-maven-plugin/1.0.5/gradle-maven-plugin-1.0.5.jar
urls[1] = 
file:/Users/jdivine/.m2/repository/org/gradle/gradle-tooling-api/1.6/gradle-tooling-api-1.6.jar
urls[2] = 
file:/Users/jdivine/.m2/repository/org/codehaus/groovy/groovy-all/2.0.6/groovy-all-2.0.6.jar
urls[3] = 
file:/Users/jdivine/.m2/repository/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar
Number of foreign imports: 1
import: Entry[import  from realm ClassRealm[maven.api, parent: null]]

-----------------------------------------------------

        at 
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:166)
        ... 21 more
Caused by: java.lang.NoClassDefFoundError: org/slf4j/impl/NewMojoLogger
        at 
org.fortasoft.maven.plugin.gradle.GradleMojo.execute(GradleMojo.java:275)
        at 
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
        ... 21 more
[ERROR]
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please 
read the following articles:
[ERROR] [Help 1] 
http://cwiki.apache.org/confluence/display/MAVEN/PluginContainerException
{noformat}

  was:
This works with 3.2.5, but fails with 3.3.1 and 3.3.3.

Error output including stacktrace below.

[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building platform.prodenv 7.3.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ platform.prodenv ---
[INFO]
[INFO] --- gradle-maven-plugin:1.0.5:invoke (clean) @ platform.prodenv ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.441 s
[INFO] Finished at: 2015-04-29T13:58:11-05:00
[INFO] Final Memory: 10M/310M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.fortasoft:gradle-maven-plugin:1.0.5:invoke 
(clean) on project platform.prodenv: Execution clean of goal 
org.fortasoft:gradle-maven-plugin:1.0.5:invoke failed: A required class was 
missing while executing org.fortasoft:gradle-maven-plugin:1.0.5:invoke: 
org/slf4j/impl/NewMojoLogger
[ERROR] -----------------------------------------------------
[ERROR] realm =    plugin>org.fortasoft:gradle-maven-plugin:1.0.5
[ERROR] strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
[ERROR] urls[0] = 
file:/Users/jdivine/.m2/repository/org/fortasoft/gradle-maven-plugin/1.0.5/gradle-maven-plugin-1.0.5.jar
[ERROR] urls[1] = 
file:/Users/jdivine/.m2/repository/org/gradle/gradle-tooling-api/1.6/gradle-tooling-api-1.6.jar
[ERROR] urls[2] = 
file:/Users/jdivine/.m2/repository/org/codehaus/groovy/groovy-all/2.0.6/groovy-all-2.0.6.jar
[ERROR] urls[3] = 
file:/Users/jdivine/.m2/repository/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar
[ERROR] Number of foreign imports: 1
[ERROR] import: Entry[import  from realm ClassRealm[maven.api, parent: null]]
[ERROR]
[ERROR] -----------------------------------------------------
[ERROR] -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal 
org.fortasoft:gradle-maven-plugin:1.0.5:invoke (clean) on project 
platform.prodenv: Execution clean of goal 
org.fortasoft:gradle-maven-plugin:1.0.5:invoke failed: A required class was 
missing while executing org.fortasoft:gradle-maven-plugin:1.0.5:invoke: 
org/slf4j/impl/NewMojoLogger
-----------------------------------------------------
realm =    plugin>org.fortasoft:gradle-maven-plugin:1.0.5
strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
urls[0] = 
file:/Users/jdivine/.m2/repository/org/fortasoft/gradle-maven-plugin/1.0.5/gradle-maven-plugin-1.0.5.jar
urls[1] = 
file:/Users/jdivine/.m2/repository/org/gradle/gradle-tooling-api/1.6/gradle-tooling-api-1.6.jar
urls[2] = 
file:/Users/jdivine/.m2/repository/org/codehaus/groovy/groovy-all/2.0.6/groovy-all-2.0.6.jar
urls[3] = 
file:/Users/jdivine/.m2/repository/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar
Number of foreign imports: 1
import: Entry[import  from realm ClassRealm[maven.api, parent: null]]

-----------------------------------------------------

        at 
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:224)
        at 
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
        at 
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
        at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
        at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
        at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
        at 
org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
        at org.apache.maven.cli.MavenCli.execute(MavenCli.java:862)
        at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:286)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:197)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at 
org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
        at 
org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
        at 
org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
        at 
org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution clean of 
goal org.fortasoft:gradle-maven-plugin:1.0.5:invoke failed: A required class 
was missing while executing org.fortasoft:gradle-maven-plugin:1.0.5:invoke: 
org/slf4j/impl/NewMojoLogger
-----------------------------------------------------
realm =    plugin>org.fortasoft:gradle-maven-plugin:1.0.5
strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
urls[0] = 
file:/Users/jdivine/.m2/repository/org/fortasoft/gradle-maven-plugin/1.0.5/gradle-maven-plugin-1.0.5.jar
urls[1] = 
file:/Users/jdivine/.m2/repository/org/gradle/gradle-tooling-api/1.6/gradle-tooling-api-1.6.jar
urls[2] = 
file:/Users/jdivine/.m2/repository/org/codehaus/groovy/groovy-all/2.0.6/groovy-all-2.0.6.jar
urls[3] = 
file:/Users/jdivine/.m2/repository/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar
Number of foreign imports: 1
import: Entry[import  from realm ClassRealm[maven.api, parent: null]]

-----------------------------------------------------

        at 
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:168)
        at 
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
        ... 20 more
Caused by: org.apache.maven.plugin.PluginContainerException: A required class 
was missing while executing org.fortasoft:gradle-maven-plugin:1.0.5:invoke: 
org/slf4j/impl/NewMojoLogger
-----------------------------------------------------
realm =    plugin>org.fortasoft:gradle-maven-plugin:1.0.5
strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
urls[0] = 
file:/Users/jdivine/.m2/repository/org/fortasoft/gradle-maven-plugin/1.0.5/gradle-maven-plugin-1.0.5.jar
urls[1] = 
file:/Users/jdivine/.m2/repository/org/gradle/gradle-tooling-api/1.6/gradle-tooling-api-1.6.jar
urls[2] = 
file:/Users/jdivine/.m2/repository/org/codehaus/groovy/groovy-all/2.0.6/groovy-all-2.0.6.jar
urls[3] = 
file:/Users/jdivine/.m2/repository/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar
Number of foreign imports: 1
import: Entry[import  from realm ClassRealm[maven.api, parent: null]]

-----------------------------------------------------

        at 
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:166)
        ... 21 more
Caused by: java.lang.NoClassDefFoundError: org/slf4j/impl/NewMojoLogger
        at 
org.fortasoft.maven.plugin.gradle.GradleMojo.execute(GradleMojo.java:275)
        at 
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
        ... 21 more
[ERROR]
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please 
read the following articles:
[ERROR] [Help 1] 
http://cwiki.apache.org/confluence/display/MAVEN/PluginContainerException


> Maven 3.3, gradle-maven-plugin fails missing class 
> org/slf4j/impl/NewMojoLogger
> -------------------------------------------------------------------------------
>
>                 Key: MNG-5817
>                 URL: https://issues.apache.org/jira/browse/MNG-5817
>             Project: Maven
>          Issue Type: Bug
>          Components: Class Loading
>    Affects Versions: 3.3.1, 3.3.3
>            Reporter: Jim Divine
>
> This works with 3.2.5, but fails with 3.3.1 and 3.3.3.
> Error output including stacktrace below.
> {noformat}
> [INFO] Error stacktraces are turned on.
> [INFO] Scanning for projects...
> [INFO]
> [INFO] 
> ------------------------------------------------------------------------
> [INFO] Building platform.prodenv 7.3.0.0-SNAPSHOT
> [INFO] 
> ------------------------------------------------------------------------
> [INFO]
> [INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ platform.prodenv ---
> [INFO]
> [INFO] --- gradle-maven-plugin:1.0.5:invoke (clean) @ platform.prodenv ---
> [INFO] 
> ------------------------------------------------------------------------
> [INFO] BUILD FAILURE
> [INFO] 
> ------------------------------------------------------------------------
> [INFO] Total time: 0.441 s
> [INFO] Finished at: 2015-04-29T13:58:11-05:00
> [INFO] Final Memory: 10M/310M
> [INFO] 
> ------------------------------------------------------------------------
> [ERROR] Failed to execute goal org.fortasoft:gradle-maven-plugin:1.0.5:invoke 
> (clean) on project platform.prodenv: Execution clean of goal 
> org.fortasoft:gradle-maven-plugin:1.0.5:invoke failed: A required class was 
> missing while executing org.fortasoft:gradle-maven-plugin:1.0.5:invoke: 
> org/slf4j/impl/NewMojoLogger
> [ERROR] -----------------------------------------------------
> [ERROR] realm =    plugin>org.fortasoft:gradle-maven-plugin:1.0.5
> [ERROR] strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
> [ERROR] urls[0] = 
> file:/Users/jdivine/.m2/repository/org/fortasoft/gradle-maven-plugin/1.0.5/gradle-maven-plugin-1.0.5.jar
> [ERROR] urls[1] = 
> file:/Users/jdivine/.m2/repository/org/gradle/gradle-tooling-api/1.6/gradle-tooling-api-1.6.jar
> [ERROR] urls[2] = 
> file:/Users/jdivine/.m2/repository/org/codehaus/groovy/groovy-all/2.0.6/groovy-all-2.0.6.jar
> [ERROR] urls[3] = 
> file:/Users/jdivine/.m2/repository/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar
> [ERROR] Number of foreign imports: 1
> [ERROR] import: Entry[import  from realm ClassRealm[maven.api, parent: null]]
> [ERROR]
> [ERROR] -----------------------------------------------------
> [ERROR] -> [Help 1]
> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute 
> goal org.fortasoft:gradle-maven-plugin:1.0.5:invoke (clean) on project 
> platform.prodenv: Execution clean of goal 
> org.fortasoft:gradle-maven-plugin:1.0.5:invoke failed: A required class was 
> missing while executing org.fortasoft:gradle-maven-plugin:1.0.5:invoke: 
> org/slf4j/impl/NewMojoLogger
> -----------------------------------------------------
> realm =    plugin>org.fortasoft:gradle-maven-plugin:1.0.5
> strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
> urls[0] = 
> file:/Users/jdivine/.m2/repository/org/fortasoft/gradle-maven-plugin/1.0.5/gradle-maven-plugin-1.0.5.jar
> urls[1] = 
> file:/Users/jdivine/.m2/repository/org/gradle/gradle-tooling-api/1.6/gradle-tooling-api-1.6.jar
> urls[2] = 
> file:/Users/jdivine/.m2/repository/org/codehaus/groovy/groovy-all/2.0.6/groovy-all-2.0.6.jar
> urls[3] = 
> file:/Users/jdivine/.m2/repository/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar
> Number of foreign imports: 1
> import: Entry[import  from realm ClassRealm[maven.api, parent: null]]
> -----------------------------------------------------
>       at 
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:224)
>       at 
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
>       at 
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
>       at 
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
>       at 
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
>       at 
> org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
>       at 
> org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
>       at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
>       at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
>       at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
>       at org.apache.maven.cli.MavenCli.execute(MavenCli.java:862)
>       at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:286)
>       at org.apache.maven.cli.MavenCli.main(MavenCli.java:197)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:606)
>       at 
> org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
>       at 
> org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
>       at 
> org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
>       at 
> org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
> Caused by: org.apache.maven.plugin.PluginExecutionException: Execution clean 
> of goal org.fortasoft:gradle-maven-plugin:1.0.5:invoke failed: A required 
> class was missing while executing 
> org.fortasoft:gradle-maven-plugin:1.0.5:invoke: org/slf4j/impl/NewMojoLogger
> -----------------------------------------------------
> realm =    plugin>org.fortasoft:gradle-maven-plugin:1.0.5
> strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
> urls[0] = 
> file:/Users/jdivine/.m2/repository/org/fortasoft/gradle-maven-plugin/1.0.5/gradle-maven-plugin-1.0.5.jar
> urls[1] = 
> file:/Users/jdivine/.m2/repository/org/gradle/gradle-tooling-api/1.6/gradle-tooling-api-1.6.jar
> urls[2] = 
> file:/Users/jdivine/.m2/repository/org/codehaus/groovy/groovy-all/2.0.6/groovy-all-2.0.6.jar
> urls[3] = 
> file:/Users/jdivine/.m2/repository/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar
> Number of foreign imports: 1
> import: Entry[import  from realm ClassRealm[maven.api, parent: null]]
> -----------------------------------------------------
>       at 
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:168)
>       at 
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
>       ... 20 more
> Caused by: org.apache.maven.plugin.PluginContainerException: A required class 
> was missing while executing org.fortasoft:gradle-maven-plugin:1.0.5:invoke: 
> org/slf4j/impl/NewMojoLogger
> -----------------------------------------------------
> realm =    plugin>org.fortasoft:gradle-maven-plugin:1.0.5
> strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
> urls[0] = 
> file:/Users/jdivine/.m2/repository/org/fortasoft/gradle-maven-plugin/1.0.5/gradle-maven-plugin-1.0.5.jar
> urls[1] = 
> file:/Users/jdivine/.m2/repository/org/gradle/gradle-tooling-api/1.6/gradle-tooling-api-1.6.jar
> urls[2] = 
> file:/Users/jdivine/.m2/repository/org/codehaus/groovy/groovy-all/2.0.6/groovy-all-2.0.6.jar
> urls[3] = 
> file:/Users/jdivine/.m2/repository/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar
> Number of foreign imports: 1
> import: Entry[import  from realm ClassRealm[maven.api, parent: null]]
> -----------------------------------------------------
>       at 
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:166)
>       ... 21 more
> Caused by: java.lang.NoClassDefFoundError: org/slf4j/impl/NewMojoLogger
>       at 
> org.fortasoft.maven.plugin.gradle.GradleMojo.execute(GradleMojo.java:275)
>       at 
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
>       ... 21 more
> [ERROR]
> [ERROR] Re-run Maven using the -X switch to enable full debug logging.
> [ERROR]
> [ERROR] For more information about the errors and possible solutions, please 
> read the following articles:
> [ERROR] [Help 1] 
> http://cwiki.apache.org/confluence/display/MAVEN/PluginContainerException
> {noformat}



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