XML Calabash collects a mostly anonymous report of the pipelines executed. This report also includes a timestamp, the IP address of your computer, and information about the version of Calabash. The report does not include any of the inputs or outputs processed by the pipeline or the dynamic values of any options or parameters. If the pipeline fails, the reason for the failure is also included.
This data will help determine what features of XProc are actually being used, how many real-world pipelines are likely to be streamable, which steps are actually used, etc.
Calabash attempts to fail gracefully if an error occurs sending the report.
You can increase the value of the report by including your email address. Set the Java system property com.xmlcalabash.phonehome.email to your email address and that will be included in the report.
You can opt out of this report by setting the Java system property com.xmlcalabash.phonehome to "false". If you opt out, no attempt is made to record anything about your pipeline.