Since apparently we magically can no longer compile without these.

src/main/java/com/gmail/nossr50/skills/fishing/FishingManager.java

@@ -3,6 +3,7 @@ package com.gmail.nossr50.skills.fishing;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 
@@ -105,7 +106,7 @@ public class FishingManager extends SkillManager {
             vehicle.remove();
         }
 
-        player.teleport(player.getTargetBlock(null, 100).getLocation(), TeleportCause.PLUGIN);
+        player.teleport(player.getTargetBlock((HashSet<Byte>) null, 100).getLocation(), TeleportCause.PLUGIN);
 
         String unleashMessage = AdvancedConfig.getInstance().getPlayerUnleashMessage();
 
@@ -168,7 +169,7 @@ public class FishingManager extends SkillManager {
             return false;
         }
 
-        Block targetBlock = getPlayer().getTargetBlock(BlockUtils.getTransparentBlocks(), 100);
+        Block targetBlock = getPlayer().getTargetBlock((HashSet<Byte>) BlockUtils.getTransparentBlocks(), 100);
 
         if (!targetBlock.isLiquid()) {
             return false;

src/main/java/com/gmail/nossr50/skills/mining/MiningManager.java

@@ -1,6 +1,7 @@
 package com.gmail.nossr50.skills.mining;
 
 import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
 
 import org.bukkit.Material;
@@ -93,7 +94,7 @@ public class MiningManager extends SkillManager {
      */
     public void remoteDetonation() {
         Player player = getPlayer();
-        Block targetBlock = player.getTargetBlock(BlockUtils.getTransparentBlocks(), BlastMining.MAXIMUM_REMOTE_DETONATION_DISTANCE);
+        Block targetBlock = player.getTargetBlock((HashSet<Byte>) BlockUtils.getTransparentBlocks(), BlastMining.MAXIMUM_REMOTE_DETONATION_DISTANCE);
 
         if (targetBlock.getType() != Material.TNT || !EventUtils.simulateBlockBreak(targetBlock, player, true) || !blastMiningCooldownOver()) {
             return;