After the latest update to V1.379 we are not able to update Hudson or any plugin. We are getting following error.

Preparation

• Checking internet connectivity
• Checking jenkins-ci.org connectivity
• java.io.IOException: Server returned HTTP response code: 500 for URL: http://updates.hudson-labs.org/update-center.json?uctest at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1313) at hudson.model.UpdateCenter$UpdateCenterConfiguration.testConnection(UpdateCenter.java:644) at hudson.model.UpdateCenter$UpdateCenterConfiguration.checkUpdateCenter(UpdateCenter.java:497) at hudson.model.UpdateCenter$ConnectionCheckJob.run(UpdateCenter.java:716) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619)

hudson.war
Failure - Details

java.io.IOException: Server returned HTTP response code: 500 for URL: http://updates.hudson-labs.org/download/war/1.380/hudson.war
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1368)
at java.security.AccessController.doPrivileged(Native Method)
at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1362)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1016)
at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:539)
at hudson.model.UpdateCenter$DownloadJob._run(UpdateCenter.java:805)
at hudson.model.UpdateCenter$DownloadJob.run(UpdateCenter.java:788)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.io.IOException: Server returned HTTP response code: 500 for URL: http://updates.hudson-labs.org/download/war/1.380/hudson.war
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1313)
at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:2173)
at java.net.URLConnection.getHeaderFieldInt(URLConnection.java:579)
at java.net.URLConnection.getContentLength(URLConnection.java:474)
at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:538)
... 8 more