java.lang.OutOfMemoryError: Java heap space
	at java.base/java.lang.StringConcatHelper.newString(StringConcatHelper.java:340)
	at java.base/java.lang.invoke.DirectMethodHandle$Holder.invokeStatic(DirectMethodHandle$Holder)
	at java.base/java.lang.invoke.LambdaForm$MH/0x00007f9dc783a800.invoke(LambdaForm$MH)
	at java.base/java.lang.invoke.Invokers$Holder.linkToTargetMethod(Invokers$Holder)
	at org.hl7.fhir.r5.context.CanonicalResourceManager.getByPackage(CanonicalResourceManager.java:748)
	at org.hl7.fhir.r5.context.BaseWorkerContext.fetchResourceWithExceptionByVersion(BaseWorkerContext.java:2480)
	at org.hl7.fhir.r5.context.BaseWorkerContext.fetchResourceWithException(BaseWorkerContext.java:2337)
	at org.hl7.fhir.r5.context.BaseWorkerContext.fetchResource(BaseWorkerContext.java:2919)
	at org.hl7.fhir.r5.context.SimpleWorkerContext.fetchResource(SimpleWorkerContext.java:863)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.resolveVS(StructureDefinitionComparer.java:1308)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.unionBindings(StructureDefinitionComparer.java:1290)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareBindings(StructureDefinitionComparer.java:1138)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:286)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareChildren(StructureDefinitionComparer.java:382)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:295)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareChildren(StructureDefinitionComparer.java:382)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:295)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareChildren(StructureDefinitionComparer.java:382)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:295)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareChildren(StructureDefinitionComparer.java:382)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:295)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareChildren(StructureDefinitionComparer.java:382)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:295)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareChildren(StructureDefinitionComparer.java:382)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:295)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareChildren(StructureDefinitionComparer.java:382)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:295)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareChildren(StructureDefinitionComparer.java:382)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:295)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareChildren(StructureDefinitionComparer.java:382)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:295)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareChildren(StructureDefinitionComparer.java:382)