Currently the conditions seem to be the other way round as they normally would:

    @Override
    public boolean canProvide(Class<?> type)
    {
-      return Deployer.class.isAssignableFrom(type);
+      return type.isAssignableFrom(Deployer.class);
    }

It does not seem to be intentional. This would not be usually spotted because usually the same class is injected and requested and no provider provides a subtype of other ResourceProvider, so the problem would never occur.

The resulting exception would look like:

java.lang.RuntimeException: Could not set value on field protected ClassA TestClass.field using ClassB@19b89d4,