This has been happening for a great many mods in the log, and I don't know why.

Minecraft Version: 1.12.2
Minecraft Forge Version: 14.23.5.2808
Apple Core Version: 3.1.4

[05:10:45] [main/WARN] [FML]: Found FMLCorePluginContainsFMLMod marker in [1.12.2] AppleCore by squeek502 (3.1.4).jar. This is not recommended, @mods should be in a separate jar from the coremod.
[05:10:45] [main/WARN] [FML]: The coremod AppleCore (squeek.applecore.AppleCore) is not signed!

What is this, anyway?

Duplicate of #122