essential plugin

[17:14:39] [Server thread/INFO]: Starting minecraft server version 1.8.7
[17:14:39] [Server thread/INFO]: Loading properties
[17:14:39] [Server thread/INFO]: Default game type: SURVIVAL
[17:14:39] [Server thread/INFO]: Generating keypair
[17:14:39] [Server thread/INFO]: Starting Minecraft server on
[17:14:39] [Server thread/INFO]: Using default channel type
[17:14:40] [Server thread/INFO]: This server is running CraftBukkit version git-Bukkit-04afd79 (MC: 1.8.7) (Implementing API version 1.8.7-R0.1-SNAPSHOT)
[17:14:40] [Server thread/INFO]: [Essentials] Loading Essentials v2.13.1
[17:14:40] [Server thread/INFO]: [EssentialsSpawn] Loading EssentialsSpawn v2.13.1
[17:14:40] [Server thread/INFO]: Preparing level "world"
[17:14:40] [Server thread/INFO]: Preparing start region for level 0 (Seed: 3152034228478739886)
[17:14:41] [Server thread/INFO]: Preparing spawn area: 60%
[17:14:41] [Server thread/INFO]: Preparing start region for level 1 (Seed: 3152034228478739886)
[17:14:42] [Server thread/INFO]: Preparing spawn area: 82%
[17:14:42] [Server thread/INFO]: Preparing start region for level 2 (Seed: 3152034228478739886)
[17:14:43] [Server thread/INFO]: [Essentials] Enabling Essentials v2.13.1
[17:14:43] [Server thread/INFO]: Bukkit version format changed. Version not checked.
[17:14:43] [Server thread/INFO]: git-Bukkit-04afd79 (MC: 1.8.7)
[17:14:43] [Server thread/INFO]: 1.8.7-R0.1-SNAPSHOT
[17:14:43] [Server thread/ERROR]: java.lang.NoSuchMethodError: com.google.common.cache.CacheBuilder.maximumSize(I)Lcom/google/common/cache/CacheBuilder;
[17:14:43] [Server thread/ERROR]: Error occurred while enabling Essentials v2.13.1 (Is it up to date?)
java.lang.NoSuchMethodError: com.google.common.cache.CacheBuilder.maximumSize(I)Lcom/google/common/cache/CacheBuilder;
	at com.earth2me.essentials.UserMap.<init>(UserMap.java:27) ~[?:?]
	at com.earth2me.essentials.Essentials.onEnable(Essentials.java:195) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[craftbukkit.jar:git-Bukkit-04afd79]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:332) [craftbukkit.jar:git-Bukkit-04afd79]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:404) [craftbukkit.jar:git-Bukkit-04afd79]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugin(CraftServer.java:341) [craftbukkit.jar:git-Bukkit-04afd79]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.enablePlugins(CraftServer.java:313) [craftbukkit.jar:git-Bukkit-04afd79]
	at net.minecraft.server.v1_8_R3.MinecraftServer.s(MinecraftServer.java:410) [craftbukkit.jar:git-Bukkit-04afd79]
	at net.minecraft.server.v1_8_R3.MinecraftServer.k(MinecraftServer.java:374) [craftbukkit.jar:git-Bukkit-04afd79]
	at net.minecraft.server.v1_8_R3.MinecraftServer.a(MinecraftServer.java:329) [craftbukkit.jar:git-Bukkit-04afd79]
	at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:235) [craftbukkit.jar:git-Bukkit-04afd79]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:507) [craftbukkit.jar:git-Bukkit-04afd79]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_45]
[17:14:43] [Server thread/INFO]: [EssentialsSpawn] Enabling EssentialsSpawn v2.13.1
[17:14:43] [Server thread/INFO]: Server permissions file permissions.yml is empty, ignoring it
[17:14:43] [Server thread/INFO]: Done (3.009s)! For help, type "help" or "?"
[17:14:47] [Server thread/INFO]: Stopping the server
[17:14:47] [Server thread/INFO]: Stopping server
[17:14:47] [Server thread/INFO]: Saving players
[17:14:47] [Server thread/INFO]: Saving worlds
[17:14:47] [Server thread/INFO]: Saving chunks for level 'world'/Overworld
[17:14:47] [Server thread/INFO]: Saving chunks for level 'world_nether'/Nether
[17:14:47] [Server thread/INFO]: Saving chunks for level 'world_the_end'/The End