Installer randomly failing to report download statistics

!ENTRY org.eclipse.equinox.p2.artifact.repository 2 0 2015-08-04 08:14:33.521
!MESSAGE Failure reporting download statistics to URL: https://devstudio.redhat.com/usage/installs/devstudio.product_9.0.mars/9.0.0-SNAPSHOT/Beta2/Beta2-v20150726-0459-B93/org.eclipse.sapphire.java.jdt
!STACK 1
org.eclipse.core.runtime.CoreException: HTTP Server Unknown HTTP Response Code (-1):https://devstudio.redhat.com/usage/installs/devstudio.product_9.0.mars/9.0.0-SNAPSHOT/Beta2/Beta2-v20150726-0459-B93/org.eclipse.sapphire.java.jdt
	at org.eclipse.equinox.internal.p2.transport.ecf.RepositoryTransport.getLastModified(RepositoryTransport.java:235)
	at org.eclipse.equinox.internal.p2.artifact.repository.MirrorRequest.collectStats(MirrorRequest.java:268)
	at org.eclipse.equinox.internal.p2.artifact.repository.MirrorRequest.transfer(MirrorRequest.java:235)
	at org.eclipse.equinox.internal.p2.artifact.repository.MirrorRequest.perform(MirrorRequest.java:153)
	at org.eclipse.equinox.internal.p2.artifact.repository.simple.SimpleArtifactRepository.getArtifact(SimpleArtifactRepository.java:707)
	at org.eclipse.equinox.internal.p2.artifact.repository.simple.DownloadJob.run(DownloadJob.java:63)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Caused by: org.eclipse.ecf.filetransfer.BrowseFileTransferException: General connection error with response code=-1
	at org.eclipse.ecf.provider.filetransfer.browse.URLFileSystemBrowser.runRequest(URLFileSystemBrowser.java:131)
	at org.eclipse.ecf.provider.filetransfer.browse.AbstractFileSystemBrowser$DirectoryJob.run(AbstractFileSystemBrowser.java:69)
	... 1 more
!SUBENTRY 1 org.eclipse.equinox.p2.transport.ecf 4 1002 2015-08-04 08:14:33.522
!MESSAGE HTTP Server Unknown HTTP Response Code (-1):https://devstudio.redhat.com/usage/installs/devstudio.product_9.0.mars/9.0.0-SNAPSHOT/Beta2/Beta2-v20150726-0459-B93/org.eclipse.sapphire.java.jdt
!STACK 1
org.eclipse.ecf.filetransfer.BrowseFileTransferException: General connection error with response code=-1
	at org.eclipse.ecf.provider.filetransfer.browse.URLFileSystemBrowser.runRequest(URLFileSystemBrowser.java:131)
	at org.eclipse.ecf.provider.filetransfer.browse.AbstractFileSystemBrowser$DirectoryJob.run(AbstractFileSystemBrowser.java:69)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
!SUBENTRY 2 org.eclipse.ecf.identity 4 0 2015-08-04 08:14:33.522
!MESSAGE General connection error with response code=-1