Restart command stopping server

[BlackBaroness]

After I type "restart" to console Its universal version

[20:34:22] [Server thread/INFO]: Saving players
[20:34:22] [Server thread/INFO]: Saving worlds
[20:34:22] [Server thread/INFO]: Saving chunks for level 'world'/overworld
[20:34:22] [Server thread/INFO]: Saving chunks for level 'DIM-1'/the_nether
[20:34:22] [Server thread/INFO]: Saving chunks for level 'DIM1'/the_end
[20:34:22] [Server thread/INFO]: Unloading dimension 0
[20:34:22] [Server thread/INFO]: Unloading dimension -1
[20:34:22] [Server thread/INFO]: Unloading dimension 1
[20:34:22] [Server thread/INFO]: Saving usercache.json
[20:34:22] [Server thread/WARN]: Java has been asked to exit (code 0)
[20:34:22] [Server thread/WARN]: Exit trace:
[20:34:22] [Server thread/WARN]:        org.spigotmc.RestartCommand.restart(RestartCommand.java:129)
[20:34:22] [Server thread/WARN]:        org.spigotmc.RestartCommand.restart(RestartCommand.java:43)
[20:34:22] [Server thread/WARN]:        org.spigotmc.RestartCommand$1.run(RestartCommand.java:34)
[20:34:22] [Server thread/WARN]:        net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:854)
[20:34:22] [Server thread/WARN]:        net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:472)

[Luohuayu]

Just print the stacktrace without any problems