Steps to reproduce:
-Using Ubuntu 14.10 open launcher .jar
-Instead of loading it keeps freezed. Log error attached
MC-160950
Unable to run minecraft due to an error loading versions
Resolved
Invalid
0
Please update to the latest version of the launcher: https://www.minecraft.net/en-us/download/alternative/
If you cannot install that launcher, update your legacy launcher to the latest one: https://twitter.com/slicedlime/status/1172081741433098240