# Animal Sniffer plugin build problem

**URL:** <https://discuss.elastic.co/t/animal-sniffer-plugin-build-problem/327665>\
**Category:** APM\
**Tags:** java\
**Created:** [March 14, 2023, 12:57pm UTC](https://discuss.elastic.co/t/animal-sniffer-plugin-build-problem/327665 "2023-03-14T12:57:41Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![sadu](https://avatars.discourse-cdn.com/v4/letter/s/4bbf92/32.png) [@sadu](https://discuss.elastic.co/u/sadu)\
**Post date:** [March 14, 2023, 12:57pm UTC](https://discuss.elastic.co/t/animal-sniffer-plugin-build-problem/327665/1 "2023-03-14T12:57:42Z")

</div>

**Elasticsearch version** :

Stack Management 8.6.2

**APM Agent language and version** :  
Java 1.36.0

\*\*Java version \*\*:  
For build I use java 11

**Original install method (e.g. download page, yum, deb, from source, etc.) and version**:

Download page and local setup

**Is there anything special in your setup?**  
We use third-party software components.

**Description of problem**

Hello Guys,

We use commercial third part software writen in Java. This software handle Queue, Webservices, GUI etc in own way. For this reason we create branch from your github branch to our own repository . On this repo we process merge /update/build and other thinks. We create own plugin in apm-agent-plugins module.

This third party software vendor released new version and I need to update our plugin.  
To handle some internal mechanisms developed by this company I need to add external jar dependency in our plugin pom.xml file.

```
    <dependency>
        <groupId>com.some</groupId>
        <artifactId>util</artifactId>
        <version>1.2.1</version>
        <scope>system</scope>
        <systemPath>${project.basedir}/../../libs/util-1.2.1.jar</systemPath>
    </dependency>

```

When I add depandency to new jar file I get error from animal sniffer during build.

```auto
[ERROR] Failed to execute goal org.codehaus.mojo:animal-sniffer-maven-plugin:1.17:check (signature-check) on project apm-gw-plugin: Execution signature-check of goal org.codehaus.mojo:animal-sniffer-maven-plugin:1.17:check failed.: UnsupportedOperationException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.codehaus.mojo:animal-sniffer-maven-plugin:1.17:check (signature-check) on project apm-gw-plugin: Execution signature-check of goal org.codehaus.mojo:animal-sniffer-maven-plugin:1.17:check failed.
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:347)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:330)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:213)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:175)
    at org.apache.maven.lifecycle.internal.MojoExecutor.access$000 (MojoExecutor.java:76)
    at org.apache.maven.lifecycle.internal.MojoExecutor$1.run (MojoExecutor.java:163)
    at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute (DefaultMojosExecutionStrategy.java:39)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:160)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:105)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:73)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:53)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:118)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:260)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:172)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:100)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:821)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:270)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    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.PluginExecutionException: Execution signature-check of goal org.codehaus.mojo:animal-sniffer-maven-plugin:1.17:check failed.
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:133)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:342)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:330)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:213)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:175)
    at org.apache.maven.lifecycle.internal.MojoExecutor.access$000 (MojoExecutor.java:76)
    at org.apache.maven.lifecycle.internal.MojoExecutor$1.run (MojoExecutor.java:163)
    at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute (DefaultMojosExecutionStrategy.java:39)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:160)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:105)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:73)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:53)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:118)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:260)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:172)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:100)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:821)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:270)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    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: java.lang.UnsupportedOperationException
    at org.objectweb.asm.ClassVisitor.visitNestMemberExperimental (ClassVisitor.java:248)
    at org.objectweb.asm.ClassReader.accept (ClassReader.java:651)
    at org.objectweb.asm.ClassReader.accept (ClassReader.java:391)
    at org.codehaus.mojo.animal_sniffer.ClassListBuilder.process (ClassListBuilder.java:70)
    at org.codehaus.mojo.animal_sniffer.ClassFileVisitor.processJarFile (ClassFileVisitor.java:175)
    at org.codehaus.mojo.animal_sniffer.ClassFileVisitor.process (ClassFileVisitor.java:120)
    at org.codehaus.mojo.animal_sniffer.maven.CheckSignatureMojo.apply (CheckSignatureMojo.java:393)
    at org.codehaus.mojo.animal_sniffer.maven.CheckSignatureMojo.buildPackageList (CheckSignatureMojo.java:340)
    at org.codehaus.mojo.animal_sniffer.maven.CheckSignatureMojo.execute (CheckSignatureMojo.java:233)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:126)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:342)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:330)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:213)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:175)
    at org.apache.maven.lifecycle.internal.MojoExecutor.access$000 (MojoExecutor.java:76)
    at org.apache.maven.lifecycle.internal.MojoExecutor$1.run (MojoExecutor.java:163)
    at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute (DefaultMojosExecutionStrategy.java:39)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:160)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:105)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:73)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:53)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:118)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:260)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:172)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:100)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:821)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:270)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    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)

```

Exception is throwed by ASM library in version 6.2. APM agent in version 1.36 use ASM in version 9.4.

For build I use maven 3.9.0 which for build use ASM in 6.2 version. In stack I see that maven call  
`ClassVisitor.visitNestMemberExperimental` . I thought why maven use method with name "experimental" for build ? Maybe bug ?

Next step was force maven to use ASM version similar to to APM Agent. I add dependency to ASM library in animal-sniffer-maven plugin

```auto
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>animal-sniffer-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <id>signature-check</id>
                        <phase>verify</phase>
                        <goals>
                            <goal>check</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <skip>${animal.sniffer.skip}</skip>
                    <signature>
                        <groupId>org.codehaus.mojo.signature</groupId>
                        <artifactId>java18</artifactId>
                        <version>1.0</version>
                    </signature>
                    <!--work around for https://github.com/mojohaus/animal-sniffer/issues/18-->
                    <ignores>java.lang.invoke.MethodHandle</ignores>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>org.ow2.asm</groupId>
                        <artifactId>asm</artifactId>
                        <version>9.4</version>
                    </dependency>
                </dependencies>
            </plugin>

```

After changing ASM version in Maven i get other error:

```auto
[ERROR] Failed to execute goal org.codehaus.mojo:animal-sniffer-maven-plugin:1.17:check (signature-check) on project apm-gw-plugin: Execution signature-check of goal org.codehaus.mojo:animal-sniffer-maven-plugin:1.17:check failed: NestMember requires ASM7 -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.codehaus.mojo:animal-sniffer-maven-plugin:1.17:check (signature-check) on project apm-gw-plugin: Execution signature-check of goal org.codehaus.mojo:animal-sniffer-maven-plugin:1.17:check failed: NestMember requires ASM7
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:347)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:330)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:213)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:175)
    at org.apache.maven.lifecycle.internal.MojoExecutor.access$000 (MojoExecutor.java:76)
    at org.apache.maven.lifecycle.internal.MojoExecutor$1.run (MojoExecutor.java:163)
    at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute (DefaultMojosExecutionStrategy.java:39)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:160)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:105)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:73)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:53)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:118)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:260)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:172)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:100)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:821)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:270)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    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.PluginExecutionException: Execution signature-check of goal org.codehaus.mojo:animal-sniffer-maven-plugin:1.17:check failed: NestMember requires ASM7
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:133)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:342)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:330)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:213)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:175)
    at org.apache.maven.lifecycle.internal.MojoExecutor.access$000 (MojoExecutor.java:76)
    at org.apache.maven.lifecycle.internal.MojoExecutor$1.run (MojoExecutor.java:163)
    at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute (DefaultMojosExecutionStrategy.java:39)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:160)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:105)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:73)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:53)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:118)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:260)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:172)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:100)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:821)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:270)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    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: java.lang.UnsupportedOperationException: NestMember requires ASM7
    at org.objectweb.asm.ClassVisitor.visitNestMember (ClassVisitor.java:265)
    at org.objectweb.asm.ClassReader.accept (ClassReader.java:696)
    at org.objectweb.asm.ClassReader.accept (ClassReader.java:424)
    at org.codehaus.mojo.animal_sniffer.ClassListBuilder.process (ClassListBuilder.java:70)
    at org.codehaus.mojo.animal_sniffer.ClassFileVisitor.processJarFile (ClassFileVisitor.java:175)
    at org.codehaus.mojo.animal_sniffer.ClassFileVisitor.process (ClassFileVisitor.java:120)
    at org.codehaus.mojo.animal_sniffer.maven.CheckSignatureMojo.apply (CheckSignatureMojo.java:393)
    at org.codehaus.mojo.animal_sniffer.maven.CheckSignatureMojo.buildPackageList (CheckSignatureMojo.java:340)
    at org.codehaus.mojo.animal_sniffer.maven.CheckSignatureMojo.execute (CheckSignatureMojo.java:233)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:126)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:342)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:330)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:213)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:175)
    at org.apache.maven.lifecycle.internal.MojoExecutor.access$000 (MojoExecutor.java:76)
    at org.apache.maven.lifecycle.internal.MojoExecutor$1.run (MojoExecutor.java:163)
    at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute (DefaultMojosExecutionStrategy.java:39)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:160)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:105)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:73)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:53)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:118)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:260)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:172)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:100)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:821)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:270)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    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)

```

From animal sniffer website ([Animal Sniffer – Project Dependency Management](https://www.mojohaus.org/animal-sniffer/dependency-management.html) ) I know that they use ASM 9.3. Also this version throw same exception.

I'm trying to understand what's going on here. I'm not sure, but I think the problem in first case is that this new delivered external jar is compiled with newer version of java, which is not supported by animal sniffer.

In second case ("check failed: NestMember requires ASM7") animal sniffer use ASM version which is not support jar compiled in older java version ?

Please help. Thank you in advance.

Adam

---

<div class="post-metadata">

**Author:** ![Jack\_Shirazi](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jack_shirazi/32/91641_2.png) [@Jack\_Shirazi](https://discuss.elastic.co/u/Jack_Shirazi)\
**Post date:** [March 14, 2023, 4:23pm UTC](https://discuss.elastic.co/t/animal-sniffer-plugin-build-problem/327665/2 "2023-03-14T16:23:33Z")

</div>

We use animal sniffer to ensure compatibility with Java 7. If you don't need compatibility with a particular version, you could disable that.

We have moved to compile using Java 17 (still with a target of Java 7 bytecode).

That's a couple of things for you to try

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 4, 2023, 12:24pm UTC](https://discuss.elastic.co/t/animal-sniffer-plugin-build-problem/327665/3 "2023-04-04T12:24:18Z")

</div>

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