The Record attribute specifies the record fields of the class: https://docs.oracle.com/javase/specs/jvms/se21/html/jvms-4.html#jvms-4.7.30
When observing a @Desugared record with javap -c -v, the following lines were printed at the end of the output:
InnerClasses:
static #10; // class dev/rndmorris/salisarcana/common/recipes/ReplaceWandCoreRecipe$1
SourceFile: "ReplaceWandCoreRecipe.java"
Record:
net.minecraft.item.ItemStack wandItem;
descriptor: Lnet/minecraft/item/ItemStack;
thaumcraft.api.wands.WandRod newRod;
descriptor: Lthaumcraft/api/wands/WandRod;
int screws;
descriptor: I
int conductors;
descriptor: I
This should not be present, since this class should not be a record.
This is causing problems, because ASM will throw an error & prevent class loading if an ASM transformer with too low of a specified version encounters a record, which causes the program to crash when it encounters @Desugared records.