Installed julia 1.11.1 with juliaup. Launching with no arguments worked as expected. Launching with -O3 caused some core packages to precompile, I'm guessing the -O3 binary code is missing from the system image (I can't remember this being an issue on older versions). Upon entering pkg mode, further packages start precompiling, but no progress is made. Full output:

(unable to copy from the terminal while it's updating, so attached as screenshot)

ctrl+c doesn't seem to kill this process either, I had to manually kill it. Starting Julia fresh again with -O3 and it freezes the same way when entering pkg mode.