format-gradle excavator is failing on an internal repo

[ash211]

What happened?

On internal repo "foundry/magritte-runtimes" for "roomba/format-gradle", the excavator is failing with this message:

Step 'eclipse groovy formatter' found problem in 'agent-util.gradle':
Multiple problems detected during step execution:
Snippet6b2651a4177a491e8b0304be58ef4317.groovy: 82: expecting ')', found '->' @ line 82, column 38.
               rename(_originalFileName -> bundledName)
                                        ^
Snippet6b2651a4177a491e8b0304be58ef4317.groovy: 82: expecting '}', found '->' @ line 82, column 38.
               rename(_originalFileName -> bundledName)
                                        ^
java.lang.IllegalArgumentException: Multiple problems detected during step execution:
Snippet6b2651a4177a491e8b0304be58ef4317.groovy: 82: expecting ')', found '->' @ line 82, column 38.
               rename(_originalFileName -> bundledName)
                                        ^
Snippet6b2651a4177a491e8b0304be58ef4317.groovy: 82: expecting '}', found '->' @ line 82, column 38.
               rename(_originalFileName -> bundledName)
                                        ^
	at com.diffplug.spotless.extra.eclipse.groovy.GrEclipseFormatterStepImpl.format(GrEclipseFormatterStepImpl.java:88)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:564)
	at com.diffplug.spotless.extra.groovy.GrEclipseFormatterStep.lambda$apply$0(GrEclipseFormatterStep.java:57)

What did you want to happen?

This excavator to succeed.

Idea

Maybe an upgrade of spotless would help? We're currently on 6.6.0 but the latest is 6.18.0 and there have been updates to the GrEclipseFormatterStep in the past couple months.