org.eclipse.core.runtime.CoreException: Unexpected error: Forbidden
	at org.eclipse.mylyn.internal.hudson.core.HudsonCorePlugin.toCoreException(HudsonCorePlugin.java:61)
	at org.eclipse.mylyn.internal.hudson.core.HudsonServerBehaviour.validate(HudsonServerBehaviour.java:928)
	at org.eclipse.mylyn.builds.internal.core.BuildServer.validate(BuildServer.java:369)
	at org.eclipse.mylyn.builds.ui.spi.BuildServerPart$Validator.run(BuildServerPart.java:114)
	at org.eclipse.mylyn.commons.repositories.ui.RepositoryLocationPart$2.run(RepositoryLocationPart.java:558)
	at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)
Caused by: org.eclipse.mylyn.internal.hudson.core.client.HudsonException: Forbidden
	at org.eclipse.mylyn.internal.hudson.core.client.HudsonOperation.run(HudsonOperation.java:169)
	at org.eclipse.mylyn.internal.hudson.core.client.RestfulHudsonClient.validate(RestfulHudsonClient.java:412)
	at org.eclipse.mylyn.internal.hudson.core.HudsonServerBehaviour.validate(HudsonServerBehaviour.java:922)
	... 4 more
Caused by: org.eclipse.mylyn.commons.repositories.core.auth.AuthenticationException: Forbidden
	at org.eclipse.mylyn.internal.hudson.core.client.HudsonOperation.validate(HudsonOperation.java:273)
	at org.eclipse.mylyn.commons.repositories.http.core.CommonHttpOperation.executeOnce(CommonHttpOperation.java:119)
	at org.eclipse.mylyn.commons.repositories.http.core.CommonHttpOperation.execute(CommonHttpOperation.java:74)
	at org.eclipse.mylyn.internal.hudson.core.client.RestfulHudsonClient$8.execute(RestfulHudsonClient.java:390)
	at org.eclipse.mylyn.internal.hudson.core.client.RestfulHudsonClient$8.execute(RestfulHudsonClient.java:1)
	at org.eclipse.mylyn.internal.hudson.core.client.HudsonOperation.run(HudsonOperation.java:167)
	... 6 more