Unexpected error occurs when running cargo aoc without any subcommands

[iamkyaru]

After executing the cargo aoc command, the following error occurs in a new project that was initialized with cargo init:

$ cargo aoc
    Finished dev [unoptimized + debuginfo] target(s) in 0.20s
An error occurs : The system cannot find the path specified. (os error 3)

Either it is a bug or the command is missing the correct feedback to the user/developer.

[gobanos]

cargo aoc relies on metadata provided by aoc-runner & aoc-runner-derive.
You can find how to set them up in aoc-runner documentation.

I do agree the error message should be improved.