NumberFormatException when running on a Linux kernel version with + in the name (6.6.13+bpo-amd64)

[TheFlash787]

Expected Behavior

Nukkit should start up successfully without crashing on newer Linux versions (E.g Debian Bullseye), and kernel versions that contain + in the version name.

Actual Behavior

Nukkit will crash during startup with an error (NumberFormatException for input string "13+bpo") causing the process to exit.

Steps to Reproduce

• Start the nukkit-1.0-SNAPSHOT.jar snapshot with a Linux kernel that contains a + symbol (E.g 6.6.13+bpo-amd64)
• Observe the crash

Debug Information

• Logs: https://pastebin.com/XAy4J3EJ
• Nukkit version: 1.20.80 (Latest version git-86683f2)

Checklist:

• I made sure there aren't duplicates of this report (Use Search)
• I made sure I am using an up-to-date version of Nukkit
• I Made sure the bug/error is not caused by a plugin

[PetteriM1]

Can you test if the issue exists on leveldb branch builds as those use a newer version of Raknet library? #2175

[TheFlash787]

Hey @PetteriM1, we'll test this and I'll get back to you soon. Thanks for the response

[TheFlash787]

@PetteriM1 That fixes the issue.

Our aim is to provide all major versions of Nukkit to our customers as server types in server hosting. However based on this, we'll only be able to support the newer versions of Nukkit only.

I assume there's not too much we can do about this, and our only other option is to move the kernel to a standard version?

Thanks so much