Our Jenkins instance uses a read-only perforce replica.

After updating the p4 plugin to v1.4.9, the error 'Replica does not support this command' for p4 revert is no longer quietly ignored and causes the Jenkins job to terminate.

The full output is now:
p4 revert [...]
Replica does not support this command.
ERROR: P4JAVA: Error(s):
Replica does not support this command.

This error now means that the plugin does not work with perforce replicas.

Unfortunately, reverting to 1.4.8 is not an option, as we require one of the other changes in 1.4.9.