Plugins wont work

I Create server with Spigot 1.8 And added plugins 1.8 version. I can see them in Files folder. But when i join to server and write /plugins it says plugins:0 LOGS:12:16:52] [Server thread/INFO]: Starting minecraft server version 1.8
[12:16:52] [Server thread/INFO]: Loading properties
[12:16:52] [Server thread/INFO]: Default game type: SURVIVAL
[12:16:52] [Server thread/INFO]: Generating keypair
[12:16:52] [Server thread/INFO]: Starting Minecraft server on *:47074
[12:16:53] [Server thread/INFO]: This server is running CraftBukkit version git-Bukkit-7019900 (MC: 1.8) (Implementing API version 1.8-R0.1-SNAPSHOT)
[12:16:54] [Server thread/ERROR]: Could not load 'plugins/ShipsDamage.jar' in folder 'plugins'
org.bukkit.plugin.InvalidDescriptionException: name 'Ships - DAMAGE!' contains invalid characters.
at org.bukkit.plugin.PluginDescriptionFile.loadMap(PluginDescriptionFile.java:894) ~[minecraft_server.jar:git-Bukkit-7019900]
at org.bukkit.plugin.PluginDescriptionFile.<init>(PluginDescriptionFile.java:232) ~[minecraft_server.jar:git-Bukkit-7019900]
at org.bukkit.plugin.java.JavaPluginLoader.getPluginDescription(JavaPluginLoader.java:157) ~[minecraft_server.jar:git-Bukkit-7019900]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:133) [minecraft_server.jar:git-Bukkit-7019900]
at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugins(CraftServer.java:288) [minecraft_server.jar:git-Bukkit-7019900]
at org.bukkit.craftbukkit.v1_8_R1.CraftServer.<init>(CraftServer.java:250) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.PlayerList.<init>(PlayerList.java:69) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.DedicatedPlayerList.<init>(SourceFile:14) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:133) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:484) [minecraft_server.jar:git-Bukkit-7019900]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]
[12:16:54] [Server thread/ERROR]: Could not load 'plugins/changeskin_1_8.jar' in folder 'plugins'
org.bukkit.plugin.UnknownDependencyException: ProtocolLib
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:219) [minecraft_server.jar:git-Bukkit-7019900]
at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugins(CraftServer.java:288) [minecraft_server.jar:git-Bukkit-7019900]
at org.bukkit.craftbukkit.v1_8_R1.CraftServer.<init>(CraftServer.java:250) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.PlayerList.<init>(PlayerList.java:69) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.DedicatedPlayerList.<init>(SourceFile:14) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:133) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:484) [minecraft_server.jar:git-Bukkit-7019900]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]
[12:16:54] [Server thread/ERROR]: Could not load 'plugins/cmnpc-1.8.0.jar' in folder 'plugins'
org.bukkit.plugin.UnknownDependencyException: Citizens
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:219) [minecraft_server.jar:git-Bukkit-7019900]
at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugins(CraftServer.java:288) [minecraft_server.jar:git-Bukkit-7019900]
at org.bukkit.craftbukkit.v1_8_R1.CraftServer.<init>(CraftServer.java:250) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.PlayerList.<init>(PlayerList.java:69) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.DedicatedPlayerList.<init>(SourceFile:14) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:133) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:484) [minecraft_server.jar:git-Bukkit-7019900]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]
[12:16:54] [Server thread/WARN]: **** SERVER IS RUNNING IN OFFLINE/INSECURE MODE!
[12:16:54] [Server thread/WARN]: The server will make no attempt to authenticate usernames. Beware.
[12:16:54] [Server thread/WARN]: While this makes the game possible to play without internet access, it also opens up the ability for hackers to connect with any username they choose.
[12:16:54] [Server thread/WARN]: To change this, set "online-mode" to "true" in the server.properties file.
[12:16:55] [Server thread/INFO]: Preparing level "world"
[12:16:55] [Server thread/ERROR]: Exception reading ./world/level.dat
java.util.zip.ZipException: Not in GZIP format
at java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:165) ~[?:1.8.0_121]
at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:79) ~[?:1.8.0_121]
at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:91) ~[?:1.8.0_121]
at net.minecraft.server.v1_8_R1.NBTCompressedStreamTools.a(SourceFile:13) ~[minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.WorldLoader.c(SourceFile:62) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.WorldLoaderServer.isConvertable(SourceFile:94) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.MinecraftServer.a(MinecraftServer.java:170) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.MinecraftServer.a(MinecraftServer.java:183) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:190) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:484) [minecraft_server.jar:git-Bukkit-7019900]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]
[12:16:55] [Server thread/WARN]: java.util.zip.ZipException: Not in GZIP format
[12:16:55] [Server thread/WARN]: at java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:165)
[12:16:55] [Server thread/WARN]: at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:79)
[12:16:55] [Server thread/WARN]: at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:91)
[12:16:55] [Server thread/WARN]: at net.minecraft.server.v1_8_R1.NBTCompressedStreamTools.a(SourceFile:13)
[12:16:55] [Server thread/WARN]: at net.minecraft.server.v1_8_R1.WorldNBTStorage.getWorldData(WorldNBTStorage.java:94)
[12:16:55] [Server thread/WARN]: at net.minecraft.server.v1_8_R1.MinecraftServer.a(MinecraftServer.java:242)
[12:16:55] [Server thread/WARN]: at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:190)
[12:16:55] [Server thread/WARN]: at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:484)
[12:16:55] [Server thread/WARN]: at java.lang.Thread.run(Thread.java:745)
[12:16:55] [Server thread/WARN]: Unable to find spawn biome
[12:16:56] [Server thread/INFO]: Preparing start region for level 0 (Seed: 6852598257617577715)
[12:17:37] [Server thread/INFO]: Preparing start region for level 2 (Seed: 2538515471428123660)
[12:17:38] [Server thread/INFO]: Server permissions file permissions.yml is empty, ignoring it
[12:17:38] [Server thread/INFO]: Done (43.739s)! For help, type "help" or "?"
[12:17:38] [Server thread/INFO]: Starting GS4 status listener
[12:17:38] [Query Listener #1/INFO]: Query running on 0.0.0.0:57074
[12:17:44] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2168ms behind, skipping 43 tick(s)
[12:17:44] [Server thread/INFO]: TheMisterEimis[/88.118.133.194:52912] logged in with entity id 2514 at ([world] 7.5, 93.0, 7.5)
[12:17:53] [Server thread/INFO]: Kaimietis[/84.46.241.148:61116] logged in with entity id 3696 at ([world] -1.5, 93.0, 1.5)
[12:18:03] [Server thread/INFO]: Kaimietis issued server command: /kill
[12:18:04] [Server thread/INFO]: TheMisterEimis issued server command: /gamemode 1
[12:18:13] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 7548ms behind, skipping 150 tick(s)
[12:18:17] [Server thread/INFO]: Opped kaimietis
[12:18:18] [Server thread/INFO]: Kaimietis fell from a high place
[12:18:21] [Server thread/INFO]: Opped themistereimis
[12:18:22] [Server thread/INFO]: Kaimietis issued server command: /fly
[12:18:22] [Server thread/INFO]: TheMisterEimis issued server command: /plugins
[12:18:25] [Server thread/INFO]: TheMisterEimis issued server command: /gamemode 1
[12:18:25] [Server thread/INFO]: [TheMisterEimis: Set own game mode to Creative Mode]
[12:18:25] [Server thread/INFO]: Kaimietis issued server command: /gamemode 1
[12:18:25] [Server thread/INFO]: [Kaimietis: Set own game mode to Creative Mode]
[12:18:46] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 14020ms behind, skipping 280 tick(s)
[12:19:09] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 20656ms behind, skipping 413 tick(s)
[12:19:17] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 3385ms behind, skipping 67 tick(s)
[12:20:44] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2043ms behind, skipping 40 tick(s)

Thanks!