unreachable is ambiguous (glob import vs any other name from outer scope during import/macro resolution)

[Dirbaio]

If you use defmt::* then try to use the defmt::Format derive, you get this error:

error[E0659]: `unreachable` is ambiguous (glob import vs any other name from outer scope during import/macro resolution)
  --> /home/dirbaio/akiles/firmware/ak-common/src/copylist.rs:18:30
   |
18 | #[derive(Copy, Clone, Debug, defmt::Format)]
   |                              ^^^^^^^^^^^^^ ambiguous name
   |
   = note: `unreachable` could refer to a macro from prelude
note: `unreachable` could also refer to the macro imported here
  --> /home/dirbaio/akiles/firmware/ak-common/src/copylist.rs:4:5
   |
4  | use defmt::*;
   |     ^^^^^^^^
   = help: consider adding an explicit import of `unreachable` to disambiguate
   = help: or use `self::unreachable` to refer to this macro unambiguously
   = note: this error originates in the derive macro `defmt::Format` (in Nightly bui`lds, run with -Z macro-backtrace for more info)

The fix would probably be specifiying ::core::unreachable!() in the macro output?