** (RuntimeError) calling cargo metadata failed.

[Maxino22]

I'm pretty new to this I have experience with elixir but very basic on rust. reading articles on rustler seems pretty cool what you can do with the two but I haven’t been able to get past the setup and running the demo... i keep getting the metadata failed I tried downgrading but no difference.

This is what is on terminal.

mac@VL8-L016 snipping_crab % mix rustler.check
Compiling 1 file (.ex)
spawn: Could not cd to native/snippy_crab

== Compilation error in file lib/snipping_crab/snippy_crab.ex ==
** (RuntimeError) calling `cargo metadata` failed.

    (rustler 0.25.0) lib/rustler/compiler/config.ex:87: Rustler.Compiler.Config.metadata!/1
    (rustler 0.25.0) lib/rustler/compiler/config.ex:69: Rustler.Compiler.Config.build/1
    (rustler 0.25.0) lib/rustler/compiler.ex:9: Rustler.Compiler.compile_crate/2
    lib/snipping_crab/snippy_crab.ex:2: (module) 

while my linter shows.

** (RuntimeError) calling `cargo metadata` failed.

    (rustler 0.25.0) lib/rustler/compiler/config.ex:87: Rustler.Compiler.Config.metadata!/1
    (rustler 0.25.0) lib/rustler/compiler/config.ex:69: Rustler.Compiler.Config.build/1
    (rustler 0.25.0) lib/rustler/compiler.ex:9: Rustler.Compiler.compile_crate/2
    lib/snipping_crab/snippy_crab.ex:2: (module)
    (elixir 1.16.2) lib/kernel/parallel_compiler.ex:428: anonymous fn/5 in Kernel.ParallelCompiler.spawn_workers/8
Elixir

Kindly assist

[Xunjin]

I had the same problem, this is probably related to path issues, highlighted here spawn: Could not cd to native/snippy_crab
Check your otp_app and crate values, whether your module matches the folder path and how is set your Cargo.toml file.

You might need to set in your Cargo.toml something like below:

[lib]
name = "snippy_crab"
path = "src/lib.rs"
crate-type = ["cdylib"]

I hope this helps ;)