java.lang.OutOfMemoryError: Java heap space
	at java.base/jdk.internal.misc.Unsafe.allocateUninitializedArray(Unsafe.java:1380)
	at java.base/java.lang.StringConcatHelper.newArray(StringConcatHelper.java:511)
	at java.base/java.lang.invoke.DirectMethodHandle$Holder.invokeStatic(DirectMethodHandle$Holder)
	at java.base/java.lang.invoke.LambdaForm$MH/0x0000000801031c00.invoke(LambdaForm$MH)
	at java.base/java.lang.invoke.Invokers$Holder.linkToTargetMethod(Invokers$Holder)
	at org.hl7.fhir.r5.context.CanonicalResourceManager.getByPackage(CanonicalResourceManager.java:743)
	at org.hl7.fhir.r5.context.BaseWorkerContext.fetchResourceWithExceptionByVersion(BaseWorkerContext.java:2470)
	at org.hl7.fhir.r5.context.BaseWorkerContext.fetchResourceWithException(BaseWorkerContext.java:2333)
	at org.hl7.fhir.r5.context.BaseWorkerContext.fetchResource(BaseWorkerContext.java:2915)
	at org.hl7.fhir.r5.context.SimpleWorkerContext.fetchResource(SimpleWorkerContext.java:861)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.derivesFrom(StructureDefinitionComparer.java:1007)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.intersectTypes(StructureDefinitionComparer.java:1034)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:279)
	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)