When I attach arm-none-eabi-gdb to the simple program from Chapter 5.4 of the Discovery book (micro:bit v2 edition), I get several symbol related (I think) warnings and have difficulty doing anything productive with GDB. The even simpler program from Chapter 5.3 seemed to be debuggable. I am running `rustc 1.81.0 (eeb90cda1 2024-09-04)` and `GNU gdb (Arm GNU Toolchain 13.3.Rel1 (Build arm-13.24)) 14.2.90.20240526-git`. The errors I see when I first attach are a bunch of the following:
* `warning: (Internal error: pc 0x100 in read in CU, but not in symtab.)`

Maybe there is a compatability issue between my build of GDB and the LLVM?