Error during `mvn clean compile package`

Hello,

I am trying to install TNRS according to the instructions provided here: https://github.com/iPlantCollaborativeOpenSource/TNRS/blob/master/INSTALL.md

During the 5. INSTALL THE COMMUNICATION SERVICE LAYER part, I am receiving a BUILD ERROR after executing mvn clean compile package

The output is as follows:

[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Failed to resolve artifact.

Missing:
----------
1) org.iplantc.core:muletoolkit:jar:dev-SNAPSHOT

25 required artifacts are missing.

for artifact: 
  org.iplantc.tnrs:tnrsservices:jar:1.0-SNAPSHOT

from the specified remote repositories:
  central (http://repo1.maven.org/maven2),
  iplantCollabodrative (http://projects.iplantcollaborative.org/archiva/repository/internal/)

It looks like the iplantCollabodrative repository cannot be accessed:

[WARNING] Unable to get resource 'commons-beanutils:commons-beanutils:pom:1.7.0-osgi' from repository iplantCollabodrative (http://projects.iplantcollaborative.org/archiva/repository/internal/): Error transferring file: Connection timed out

The full output from the command is available here: https://gist.github.com/kyleLesack/00028a734c7fe11b7dc3

I was able to perform the previous installation steps (including dependencies) prior to this step on a Centos 5.8 virtualbox VM.

Is this a known error? I'm not familar with Maven or Apache, so I'd appreciate any help or suggestions.

Thanks in advance!

iPlantCollaborativeOpenSource / TNRS

Error during `mvn clean compile package` #9