This is hopefully a bug with maven itself or its repository servers. Need to isolate and determine if it is reliably reproducible -- suspect it isn't. (503 would seem to indicate intermittent problem with repo1.maven.org server.)
I've experienced this multiple times running the first steps of DevSetup (mvn clean install) on new systems. I get an error like:
Downloading: http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-jar-plugin/2.0/maven-jar-plugin-2.0.jar
7K downloaded
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Failed to resolve artifact.
Error transferring file
org.apache.maven.plugins:maven-jar-plugin:maven-plugin:2.0
from the specified remote repositories:
central (http://repo1.maven.org/maven2),
topaz (http://gandalf.topazproject.org/maven2)
Caused by I/O exception: Server returned HTTP response code: 503 for URL: http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-jar-plugin/2.0/maven-jar-plugin-2.0.jar.sha1
Just running mvn clean install again and it gets past this:
Downloading: http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-jar-plugin/2.0/maven-jar-plugin-2.0.jar
7K downloaded
Downloading: http://gandalf.topazproject.org/maven2/org/apache/maven/maven-project/2.0.1/maven-project-2.0.1.pom
Suggest attempt to reproduce again on clean system. Then post complaint on maven mailing-list to see if others have similar problem. I didn't see anything in its archives about this kind of thing.
