inspector throws exceptions on some clojure code

[pcallahan-r7]

clojure 1.8.0. JDK 8.

there's several exceptions being throw in core clojure classes, 3rd party classes and app classes, here is an example, they are all roughly the same exception:

2019-08-26 14:01:46,280 gadgetinspector.PassthroughDiscovery [ERROR] Exception analyzing clojure/core/rrb_vector/rrbt/Vector
java.lang.ArrayIndexOutOfBoundsException: -1
	at java.util.ArrayList.elementData(ArrayList.java:422)
	at java.util.ArrayList.get(ArrayList.java:435)
	at gadgetinspector.TaintTrackingMethodVisitor.getStackTaint(TaintTrackingMethodVisitor.java:900)
	at gadgetinspector.PassthroughDiscovery$PassthroughDataflowMethodVisitor.visitMethodInsn(PassthroughDiscovery.java:433)
	at org.objectweb.asm.tree.MethodInsnNode.accept(MethodInsnNode.java:116)
	at org.objectweb.asm.tree.InsnList.accept(InsnList.java:145)
	at org.objectweb.asm.tree.MethodNode.accept(MethodNode.java:789)
	at org.objectweb.asm.commons.JSRInlinerAdapter.visitEnd(JSRInlinerAdapter.java:150)
	at org.objectweb.asm.ClassReader.readMethod(ClassReader.java:1278)
	at org.objectweb.asm.ClassReader.accept(ClassReader.java:679)
	at org.objectweb.asm.ClassReader.accept(ClassReader.java:391)
	at gadgetinspector.PassthroughDiscovery.calculatePassthroughDataflow(PassthroughDiscovery.java:87)
	at gadgetinspector.PassthroughDiscovery.discover(PassthroughDiscovery.java:30)
	at gadgetinspector.GadgetInspector.main(GadgetInspector.java:103)