Hi, I experience a startup crash whenever both Icarus and Entropy are installed. It loads normally with Icarus disabled. I believe Do a Barrel Roll may have some involvement as well, but I am unsure as it loads fine with it enabled.

Log:
https://gist.github.com/Kaede4Life/59d95cc323b47bbe121411b34f26c42a

Icarus:
https://www.curseforge.com/minecraft/mc-mods/icarus

Do a Barrel Roll:
https://www.curseforge.com/minecraft/mc-mods/do-a-barrel-roll