Can't `mix compile` with path dependency in `Cargo.toml`

[grzuy]

== Compilation error in file lib/candlex/native.ex ==
** (Protocol.UndefinedError) protocol Enumerable not implemented for nil of type Atom
    (elixir 1.15.7) lib/enum.ex:1: Enumerable.impl_for!/1
    (elixir 1.15.7) lib/enum.ex:166: Enumerable.reduce/3
    (elixir 1.15.7) lib/enum.ex:4387: Enum.filter/2
    (rustler 0.30.0) lib/rustler/compiler/config.ex:130: Rustler.Compiler.Config.gather_local_crates/4
    (rustler 0.30.0) lib/rustler/compiler/config.ex:108: Rustler.Compiler.Config.external_resources/3
    (rustler 0.30.0) lib/rustler/compiler/config.ex:79: Rustler.Compiler.Config.build/1
    (rustler 0.30.0) lib/rustler/compiler.ex:8: Rustler.Compiler.compile_crate/3
    lib/candlex/native.ex:11: (module)

[grzuy]

Concretely happening for me in https://github.com/mimiquate/candlex/compare/candle-core-path?expand=1.

[grzuy]

In this case the crate dependency is a workspace member and the one failing is another workspace member of the same workspace. Might be an edge case causing this?