[CDash] Maximum number of builds reached for PROJECT

[Anonymous Maarten]

Hey,

As of a few weeks ago, we're hitting the the following warning:
*Warning: Maximum number of builds reached for OpenRW. Contact
webmaster at cdash.org <webmaster at cdash.org> for support.*
on our my.cdash page at https://my.cdash.org/index.php?project=OpenRW.

This causes our CI at
https://ci.appveyor.com/project/rwengine/openrw/builds/21694785 to fail
because uploading to cdash fails:

How can we work around this?
We are an OSS project and would prefer staying with a free cdash solution.
Purging old builds would be fine for us, as we currently have 2206 builds.
Is there a way to purge builds older then a certain date?

Kind regards
and thanks for providing this service

Maarten
anonymous.maarten at gmail.com
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