Spin is incompatible with JDK 16

WARNING: An illegal reflective access operation has occurred
 WARNING: Illegal reflective access by spinjar.com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/[snip]/.m2/repository/org/camunda/spin/camunda-spin-dataformat-all/1.10.0/camunda-spin-dataformat-all-1.10.0.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
 WARNING: Please consider reporting this to the maintainers of spinjar.com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
 WARNING: All illegal access operations will be denied in a future release

Caused by: java.lang.ExceptionInInitializerError
 at spinjar.com.sun.xml.bind.v2.runtime.reflect.opt.AccessorInjector.prepare(AccessorInjector.java:83)
 at spinjar.com.sun.xml.bind.v2.runtime.reflect.opt.OptimizedAccessorFactory.get(OptimizedAccessorFactory.java:125)
 at spinjar.com.sun.xml.bind.v2.runtime.reflect.Accessor$GetterSetterReflection.optimize(Accessor.java:399)
 at spinjar.com.sun.xml.bind.v2.runtime.property.SingleElementLeafProperty.<init>(SingleElementLeafProperty.java:87)
 at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:78)
 at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
 at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
 at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
 at spinjar.com.sun.xml.bind.v2.runtime.property.PropertyFactory.create(PropertyFactory.java:128)
 at spinjar.com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:181)
 at spinjar.com.sun.xml.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:509)
 at spinjar.com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:168)
 at spinjar.com.sun.xml.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:509)
 at spinjar.com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:168)
 at spinjar.com.sun.xml.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:509)
 at spinjar.com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:326)
 at spinjar.com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:141)
 at spinjar.com.sun.xml.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1157)
 ...
 Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @4de4b452
 at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:357)
 at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
 at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199)
 at java.base/java.lang.reflect.Method.setAccessible(Method.java:193)
 at spinjar.com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1.run(Injector.java:177)
 at spinjar.com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1.run(Injector.java:174)
 at java.base/java.security.AccessController.doPrivileged(AccessController.java:312)
 at spinjar.com.sun.xml.bind.v2.runtime.reflect.opt.Injector.<clinit>(Injector.java:172)
 ... 176 more

% java --version
openjdk 16 2021-03-16
OpenJDK Runtime Environment (build 16+36-2231)
OpenJDK 64-Bit Server VM (build 16+36-2231, mixed mode, sharing)