'Proguard plugin is giving error: Failed to execute goal: proguard (default) on project X: Obfuscation failed (result=1)

I am working on an open source Java Maven project which is using proguard-maven-plugin to obfuscate the application code. It is working fine until I have added 2 new maven dependencies:

<dependency>
    <groupId>com.formdev</groupId>
    <artifactId>flatlaf</artifactId>
    <version>0.43</version>
</dependency>
<dependency>
    <groupId>com.formdev</groupId>
    <artifactId>flatlaf-intellij-themes</artifactId>
    <version>0.43</version>
</dependency>

After that, I started getting the following error stack while run mvn clean install cmd:

[ERROR] Failed to execute goal com.github.wvengen:proguard-maven-plugin:2.0.14:proguard (default) on project X: Obfuscation failed (result=1) -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal com.github.wvengen:proguard-maven-plugin:2.0.14:proguard (default) on project X: Obfuscation failed (result=1)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
    at org.codehaus.classworlds.Launcher.main (Launcher.java:47)
Caused by: org.apache.maven.plugin.MojoExecutionException: Obfuscation failed (result=1)
    at com.github.wvengen.maven.proguard.ProGuardMojo.proguardMain (ProGuardMojo.java:814)
    at com.github.wvengen.maven.proguard.ProGuardMojo.execute (ProGuardMojo.java:617)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
    at org.codehaus.classworlds.Launcher.main (Launcher.java:47)
[ERROR] 
[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/MojoExecutionException

I don't have much idea of Proguard and I have checked various posts to find the reason for the error or possible solution, but no success at all. If I remove those two dependencies, it works as expected (without any error).

This is proguard-maven-plugin configuration in my pom.xml file:

<plugin>
    <groupId>com.github.wvengen</groupId>
    <artifactId>proguard-maven-plugin</artifactId>
    <version>2.0.14</version>
    <dependencies>
        <dependency>
            <groupId>net.sf.proguard</groupId>
            <artifactId>proguard-base</artifactId>
            <version>6.0.3</version>
        </dependency>
    </dependencies>
    <executions>
        <execution>
            <phase>package</phase>
            <goals>
                <goal>proguard</goal>
            </goals>
        </execution>
    </executions>
    <configuration>
        <proguardVersion>6.0.3</proguardVersion>
        <obfuscate>true</obfuscate>
        <injar>${project.build.finalName}.jar</injar>
        <outjar>${project.build.finalName}.jar</outjar>
        <includeDependency>true</includeDependency>
        <addMavenDescriptor>true</addMavenDescriptor>
        <silent>true</silent>
        <options>
            <option>-dontshrink</option>
            <option>-optimizations no_optimizations</option>
            <option>-keep class com.X.model.** { public protected private *; }</option>
            <option>-keep class com.X.rest.service.** { public protected private *; }</option>
            <option>-keepnames class ** { public protected *; }</option>
            <option>-keepattributes *Annotation*,Signature,EnclosingMethod,InnerClasses,Exceptions,MethodParameters,SourceFile,LineNumberTable</option>
        </options>
        <libs>
            <lib>${java.home}/lib/rt.jar</lib>
            <lib>${java.home}/lib/jce.jar</lib>
        </libs>
    </configuration>
</plugin>

Any help would be appreciated. Thanks in advance!

Solution 1:^[1]

After updating the proguard-maven-plugin version, I am not seeing the issue anymore. I have updated the plugin version to 2.3.1.

Solution 2:^[2]

I have added pluginManagement before plugins and the error was disappeared.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	Vinay Gupta
Solution 2	MarcelinD

'Proguard plugin is giving error: Failed to execute goal: proguard (default) on project X: Obfuscation failed (result=1)

Solution 1:[1]

Solution 2:[2]

Sources

Related Questions

Solution 1:^[1]

Solution 2:^[2]