first 1.11.1 attempt

src/main/java/com/sosnitzka/taiga/traits/TraitFragile.java

@@ -5,12 +5,16 @@ import net.minecraft.block.state.IBlockState;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.init.Blocks;
 import net.minecraft.item.ItemStack;
+import net.minecraft.util.NonNullList;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.text.TextFormatting;
 import net.minecraft.world.World;
+import slimeknights.mantle.util.RecipeMatch;
 import slimeknights.tconstruct.library.traits.AbstractTrait;
 import slimeknights.tconstruct.library.utils.ToolHelper;
 
+import java.util.Optional;
+
 public class TraitFragile extends AbstractTrait {
 
     public TraitFragile() {
@@ -81,4 +85,9 @@ public class TraitFragile extends AbstractTrait {
         int maxDurability = ToolHelper.getMaxDurability(tool);
         return (0.4f) / (maxDurability - 50) * (durability) + 0.55f;
     }
+
+    @Override
+    public Optional<RecipeMatch.Match> matches(NonNullList<ItemStack> stacks) {
+        return null;
+    }
 }