Some Enforcer rules have failed. Look above for specific messages explaining why the rule failed.

[zaozaool]

Hi, @TylerJewell

I had git clone codenvy to local, and when run 'mvn clean install -e' some error happend.
Cloud you give me some suggistion or tell me the reason?

My environment like this:

Apache Maven 3.0.5
Maven home: /usr/share/maven
Java version: 1.8.0_60, vendor: Oracle Corporation
Java home: /home/scm/jdk1.8.0_60/jre
Default locale: en_US, platform encoding: ANSI_X3.4-1968
OS name: "linux", version: "3.2.0-23-generic", arch: "amd64", family: "unix"

Error:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-enforcer-plugin:1.4:enforce (enforce-maven-version) on project onpremises-assembly-parent: Some Enforcer rules have failed. Look above for specific messages explaining why the rule failed. -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-enforcer-plugin:1.4:enforce (enforce-maven-version) on project onpremises-assembly-parent: Some Enforcer rules have failed. Look above for specific messages explaining why the rule failed.
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
        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:84)
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
        at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
        at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
        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:497)
        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.MojoExecutionException: Some Enforcer rules have failed. Look above for specific messages explaining why the rule failed.
        at org.apache.maven.plugins.enforcer.EnforceMojo.execute(EnforceMojo.java:194)
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
        ... 19 more

Thanks.

[benoitf]

hello @zaozaool , what is the full error message as you've cropped the interesting part ?
based on your environment I would say it's that your maven version is too old as Che is requiring Maven 3.3.+
https://github.com/eclipse/che#dependencies

[zaozaool]

thank you
I had git clone git@github.com:eclipse/che.git, and it runed properly.
but I can't start workspace, i had submited another issue:
eclipse-che/che#1621
please help again.
thank you very much.