In the launcher after downloading the snapshot, the following appear:

[19:53:03] [Client thread/INFO]: Setting user: ObscenityFurr
[19:53:03] [Client thread/INFO]: (Session ID is token::)
[19:53:07] [Client thread/INFO]: LWJGL Version: 2.9.4
[19:53:08] [Client thread/INFO]: Reloading ResourceManager: Default
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:block.chorus_flower.death
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:block.chorus_flower.grow
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:block.furnace.fire_crackle
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:block.waterlily.place
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.cow.milk
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.hanging.place
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.hanging.pop
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.itemframe.add_item
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.itemframe.break
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.itemframe.place
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.itemframe.remove_item
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.itemframe.rotate_item
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.leashknot.place
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.painting.break
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.painting.place
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.snowman.ambient
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.snowman.death
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.snowman.hurt
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.squid.ambient
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.squid.death
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:entity.squid.hurt
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:item.armor.equip_chain
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:item.armor.equip_diamond
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:item.armor.equip_generic
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:item.armor.equip_gold
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:item.armor.equip_iron
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:item.armor.equip_leather
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:item.bottle.fill
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:item.bottle.fill_dragonbreath
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:item.bucket.empty
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:item.bucket.empty_lava
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:item.bucket.fill
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:item.bucket.fill_lava
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:item.hoe.till
[19:53:16] [Client thread/WARN]: Missing sound for event: minecraft:item.shovel.flatten
[19:53:16] [Sound Library Loader/INFO]: Starting up SoundSystem...
[19:53:16] [Thread-5/INFO]: Initializing LWJGL OpenAL
[19:53:16] [Thread-5/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[19:53:17] [Thread-5/INFO]: OpenAL initialized.
[19:53:17] [Sound Library Loader/INFO]: Sound engine started
[19:53:19] [Client thread/INFO]: Created: 1024x512 textures-atlas
[19:53:20] [Client thread/ERROR]: Realms module missing
[19:53:32] [Client thread/INFO]: Stopping!
[19:53:32] [Client thread/INFO]: SoundSystem shutting down...
[19:53:32] [Client thread/WARN]: Author: Paul Lamb, www.paulscode.com
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release