org.hl7.fhir.exceptions.DefinitionException: StructureDefinition is not for an profile - can't be compared (left: Identifier)
	at org.hl7.fhir.services.comparison.StructureDefinitionComparer.check(StructureDefinitionComparer.java:183)
	at org.hl7.fhir.services.comparison.StructureDefinitionComparer.compare(StructureDefinitionComparer.java:112)
	at org.hl7.fhir.services.comparison.ComparisonSession.compare(ComparisonSession.java:93)
	at org.hl7.fhir.services.comparison.StructureDefinitionComparer.intersectTypes(StructureDefinitionComparer.java:1038)
	at org.hl7.fhir.services.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:267)
	at org.hl7.fhir.services.comparison.StructureDefinitionComparer.compareChildren(StructureDefinitionComparer.java:374)
	at org.hl7.fhir.services.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:283)
	at org.hl7.fhir.services.comparison.StructureDefinitionComparer.compare(StructureDefinitionComparer.java:161)
	at org.hl7.fhir.services.comparison.ComparisonSession.compare(ComparisonSession.java:93)
	at org.hl7.fhir.services.comparison.StructureDefinitionComparer.checkAddTypeUnion(StructureDefinitionComparer.java:966)
	at org.hl7.fhir.services.comparison.StructureDefinitionComparer.unionTypes(StructureDefinitionComparer.java:899)
	at org.hl7.fhir.services.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:266)
	at org.hl7.fhir.services.comparison.StructureDefinitionComparer.compareChildren(StructureDefinitionComparer.java:374)
	at org.hl7.fhir.services.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:283)
	at org.hl7.fhir.services.comparison.StructureDefinitionComparer.compare(StructureDefinitionComparer.java:161)
	at org.hl7.fhir.services.comparison.ComparisonSession.compare(ComparisonSession.java:93)
	at org.hl7.fhir.igtools.publisher.comparators.PreviousVersionComparator.finishChecks(PreviousVersionComparator.java:269)
	at org.hl7.fhir.igtools.publisher.PublisherProcessor.checkConformanceResources(PublisherProcessor.java:1516)
	at org.hl7.fhir.igtools.publisher.PublisherProcessor.loadConformance2(PublisherProcessor.java:109)
	at org.hl7.fhir.igtools.publisher.Publisher.createIg(Publisher.java:397)
	at org.hl7.fhir.igtools.publisher.Publisher.execute(Publisher.java:226)
	at org.hl7.fhir.igtools.publisher.Publisher.main(Publisher.java:1623)