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https://issues.apache.org/jira/browse/BUILDR-69?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12597676#action_12597676
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Assaf Arkin commented on BUILDR-69:
-----------------------------------

I think that happens when the server returns a response without the 
Content-Length header.   I'll add a fix for Buildr to avoid the exception.

However, you're accessing the maven.org repository here, which runs on Apache.  
Apache always returns the Content-Length header (essentially the file size), so 
if you're getting a 200 OK response with no Content-Header, check the proxy 
server.  Unfortunately, if the proxy server decides to send back empty 
responses, you may end up with zero-sized JARs in your local repository.


> Certain artifacts don't download properly from remote repository
> ----------------------------------------------------------------
>
>                 Key: BUILDR-69
>                 URL: https://issues.apache.org/jira/browse/BUILDR-69
>             Project: Buildr
>          Issue Type: Bug
>          Components: Dependency management
>    Affects Versions: 1.2.10
>         Environment: Windoze
>            Reporter: Shane Witbeck
>            Priority: Minor
>
> Certain dependencies don't download as expected from a remote repository. I 
> notice that the icon for the struts2-core on the repository is different (not 
> a folder like the others) if I use a browser. I suspect it's a 
> symlink/redirect that Buildr doesn't know how to handle?
> Downloading org.apache.struts:struts2-core:jar:2.0.11.1 
> Downloading 
> http://repo1.maven.org/maven2/org/apache/struts/struts2-core/2.0.11.1/struts2-core-2.0.11.1.jar
> undefined method `zero?' for nil:NilClass
>  

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