Carpet and Tweakeroo do not play well together:

[14:48:00] [main/WARN]: Method overwrite conflict for getPickupDelay in carpet.mixins.json:ItemEntityMixin, previously written by fi.dy.masa.tweakeroo.mixin.MixinItemEntity. Skipping method.

It is still possible to load both mods and use almost all features.

(Link to Carpet issue)

Are you saying some feature actually does not work properly? This is just a warning due to a getter method conflict, both mods should still work fine AFAIK?

Sorry, it was a wild guess. At least all the features I'm using are working fine. Also, gnembon fixed this in his carpet mod, so I'm closing the issue now.