There are a number of limitations and restrictions on what Jenkins features work in long-running builds. Generally speaking, anything that works in a freestyle project in the pre-build or post-build phase should also work. But general build steps are not available except as part of the nondetached pre-build phase, and build wrappers will generally not work. Also surviving a restart can only work if Jenkins can reconnect to the exact same slave without that machine having rebooted, so this will generally not work on cloud-provisioned slaves. Consult the release notes for this plugin to see other issues.