unexpected panic under load

[shadow-kestrel]

while the host system was under heavy load, i encountered a panic. while i've lost the exact output, i noted the following:

• nothing was printed before or after the panic
• panicked at common/src/node.rs:77:25
• 'no entry found for key'

(found while trying to reproduce some unexpected behaviour when killed by OOM)

Environment

• CPU: Intel i7-8650U
• GPU: Intel UHD 620 (integrated)
• Memory: 6.5/7.3 GiB used
• Swap: ~4/7.3 GiB used after OOM
• Arch Linux, kernel 6.18.7.arch1-1
• Sway (Wayland)

Steps taken before crash

• write a client.toml config file containing only save = "/tmp/aaaa". no other config files present
• /tmp/aaaa does not exist prior to launching the game
• launch the game
• open many firefox tabs, including a youtube video
• start flying around ingame
• youtube video starts playing
• the panic occured about a second afterwards

Reproduction

i have been unable to reproduce this crash for ~15m of trying.