Deprecated warnings in terminal when running program with java 24

[gavr123456789]

Hi, just installed effekt and when I run the hello world example Im getting:

/Documents/Fun/Effekt/hello.effekt --backend js --includes /Users/gavriil.maksyutenko/Documents/Fun/Effekt 

WARNING: A terminally deprecated method in sun.misc.Unsafe has been called
WARNING: sun.misc.Unsafe::objectFieldOffset has been called by scala.runtime.LazyVals$ (file:/opt/homebrew/lib/node_modules/@effekt-lang/effekt/bin/effekt)
WARNING: Please consider reporting this to the maintainers of class scala.runtime.LazyVals$
WARNING: sun.misc.Unsafe::objectFieldOffset will be removed in a future release
hello, world

its pretty annoying :)

[gavr123456789]

btw
java --version
openjdk 24.0.1 2025-04-15
OpenJDK Runtime Environment (build 24.0.1+9-30)
OpenJDK 64-Bit Server VM (build 24.0.1+9-30, mixed mode, sharing)

[marvinborner]

Thanks! This is a known issue with OpenJDK 24 and I can reproduce it on current master.

For now, downgrading to older OpenJDK versions removes the warnings. I believe the assumption was that #1045 would fix it, which it did not.

[jiribenes]

Strange 🤔, I'd also have thought that it would be fixed, Scala's compatibility table would indicate that Scala 3.3.6 supports JDK24... (even JDK25 preview!)

EDIT: We do have some other Scala dependencies -- could it be them? 🤔