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From Andreas Gudian <andreas.gud...@gmail.com>
Subject Re: Maven SCM plugin fails to do a scm:update after a scm:checkout with strange error message "Command failed.The git-log command failed."
Date Fri, 01 Mar 2013 07:55:51 GMT
Hi,

Don't you have to use the https or ssh transport for github write access?
The git protocol is read-only on github.

Anyway you're right, the error message is a bit confusing. ;)

Andreas

Am Donnerstag, 28. Februar 2013 schrieb seba.wagner@gmail.com :

> Hi,
>
> I have configured a Maven project to checkout a Git project using:
>
> <scm>
>     <developerConnection>scm:git:git@git.github.com:
> example/myproject.git</developerConnection>
> </scm>
>
>
> Using: mvn scm:checkout
>
> The project checks out fine into target/checkout
>
> I would expect if do a "scm:update" it would simply work, cause
> scm:checkout works. But it doesn't. By running with the "-e" option (mvn -e
> scm:update) to get the full stack trace, it will show some obscure error
> message:
>
> [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-scm-plugin:1.8.1:update (default-cli)
> on project mysampleproject: Command failed.The git-log command failed.
> -> [Help 1]
> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to
> execute goal org.apache.maven.plugins:maven-scm-plugin:1.8.1:update
> (default-cli) on project mysampleproject: Command failed.The git-log
> command 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:57)
>     at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>     at java.lang.reflect.Method.invoke(Method.java:601)
>     at
> org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
>     at
> org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
>     at
> org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
>     at
> org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
> Caused by: org.apache.maven.plugin.MojoExecutionException: Command
> failed.The git-log command failed.
>     at
> org.apache.maven.scm.plugin.AbstractScmMojo.checkResult(AbstractScmMojo.java:439)
>     at org.apache.maven.scm.plugin.UpdateMojo.execute(UpdateMojo.java:93)
>     at
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
>     at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
>     ... 19 more
> [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
>
>
> Now what should this error tell me ?
>
> "git log" of course works. If I cd to the directory that Maven did checkout
> using "scm:checkout", I can perform "git log" and will get the correct
> output.
>
> I have found the source code that produces the the Maven error:
>
>
> http://maven.apache.org/scm/maven-scm-providers/maven-scm-providers-git/maven-scm-provider-gitexe/xref/org/apache/maven/scm/provider/git/gitexe/command/update/GitUpdateCommand.html
>
> "The git-log command failed."
>
> .... :) But it does not really tell me why "git-log" failed or what I could
> do to resolve it.
>
> Any ideas about how I can further debug or resolve that issue?
>
> Sebastian
> --
> Sebastian Wagner
> https://twitter.com/#!/dead_lock
> http://www.webbase-design.de
> http://www.wagner-sebastian.com
> seba.wagner@gmail.com <javascript:;>
>

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