BearMetal Carts

Evidence

Ran on Kiln's test stand (2026-11-04): BearMetalCarts did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/attachment/v1/AttachmentTarget.

What it needs from Kiln

• an access widener
• Mixin
• net.fabricmc.fabric.api.attachment.v1.AttachmentRegistry
• net.fabricmc.fabric.api.attachment.v1.AttachmentRegistry.Builder
• net.fabricmc.fabric.api.attachment.v1.AttachmentSyncPredicate
• net.fabricmc.fabric.api.attachment.v1.AttachmentTarget
• net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStarted
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents.EndTick
• net.fabricmc.fabric.api.gamerule.v1.GameRuleBuilder
• net.fabricmc.fabric.api.gamerule.v1.GameRuleBuilder.EnumRuleBuilder
• net.fabricmc.fabric.api.gamerule.v1.GameRuleBuilder.IntegerRuleBuilder
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Join
• net.minecraft.commands.CommandSourceStack
• net.minecraft.commands.Commands
• net.minecraft.commands.Commands.CommandSelection
• net.minecraft.commands.arguments.EntityArgument
• net.minecraft.core.component.DataComponents
• net.minecraft.nbt.CompoundTag
• net.minecraft.nbt.StringTag
• net.minecraft.network.codec.ByteBufCodecs
• net.minecraft.server.MinecraftServer
• net.minecraft.server.level.TicketType
• net.minecraft.server.network.ServerGamePacketListenerImpl
• net.minecraft.server.permissions.PermissionCheck
• net.minecraft.world.entity.vehicle.minecart.AbstractMinecart
• net.minecraft.world.entity.vehicle.minecart.MinecartChest
• net.minecraft.world.entity.vehicle.minecart.MinecartHopper
• net.minecraft.world.flag.FeatureFlagSet
• net.minecraft.world.flag.FeatureFlags
• net.minecraft.world.item.component.CustomData
• net.minecraft.world.level.block.BaseRailBlock
• net.minecraft.world.level.block.state.properties.RailShape
• net.minecraft.world.level.gamerules.GameRuleCategory
• net.minecraft.world.phys.AABB
• BuiltInRegistries.TICKET_TYPE
• ServerLevel.getEntitiesOfClass()
• ServerPlayer.permissions()
• ItemStack.get()
• and 9 more

On the roadmap: Code next to data (0.3), Mixin (0.5)

In the author's words

This mod aims to finish implementing the experimental minecart changes in an accessible way.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file bearmetalcarts-1.2.0.jar. The scan reads the mod's classes; it does not run them.