I have a board with an stm32f072cbt6 and I've followed the tutorial (with the template). I think I've adjusted all files correctly, but when building, I get:
```
  = note: rust-lld: error: 
          ERROR(cortex-m-rt): stack end address is not below stack start.
          
          rust-lld: error: 
          ERROR(cortex-m-rt): stack end address is not below stack start.
          
          rust-lld: error: 
          ERROR(cortex-m-rt): stack end address is not below stack start.
```
I've tried to increase/decrease RAM and FLASH size to check if something overflows, but it seems that the error is different in these cases. So, not sure what is happening. Tried using `--print-map` to see how symbols are set, but couldn't find the actual values for stack_start/end. Any idea?