This is a new one (not in anything the embedded maintainers own, but still adjacent...)
```
rust-lld: error: undefined symbol: __exidx_end
>>> referenced by unwind-arm-common.inc:366 (../../../../../../gcc-14.2.0/libgcc/unwind-arm-common.inc:366)
>>>               lora_modem.elf:(get_eit_entry)

rust-lld: error: undefined symbol: __exidx_start
```
the joys of linking to C libraries I guess - I don't know why this never came up in the past 6 months.