For reference, this was the trace this time:
```
Found control block at 0x20027bc8
----------------
0.500 DEBUG: fw_main || 3 test: Some(23)
1.000 DEBUG: fw_main || now? None
ExceptionFrame {
    r0: 0x00000000,
    r1: 0x0002c1e0,
    r2: 0x200052bc,
    r3: 0x200052bc,
    r12: 0x0001fff8,
    lr: 0x00027a27,
    pc: 0x200052bc,
    xpsr: 0x40000000,
}

```