I get attached error on launching game and trying snapshot(s) with Linux Minecraft Launcher.
I can get in-game (and snapshots) with .jar file provided by blog post without issues, but my version history on launcher gets reset each time.
Upgrades do not download on rebooting launcher and either upgrading the system.
Minecraft launcher version: 2.0.845-dev-linux
Linux 4.10.0-37-lowlatency
#41-Ubuntu SMP PREEMPT Fri Oct 6 21:30:07 UTC
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Your launcher is outdated (latest version is 2.0.1005
). If the launcher doesn't update itself, then download the newest version here.

Thank you for fast response! Obviosly latest client did not work for some reason.
[media]

Here is fully pasted errors which i get on launch of snapshot. I am sorry that i did not use pastebin. Too long for them.
https://gist.github.com/anonymous/c3677185992e893776e38ee7c054ca19
Thank you for your report!
However, this issue has been closed as a Duplicate of MC-121285.
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