Solutions to rust-lang/rustlings 5.5.1.
Either look up directly in the browser or clone the repo. As if in the original repo, the exercises are in directory exercises/.
If you have cloned the repo to local, you can verify the answers using command rustlings verify in the directory of the repo.
Attached Rust application is a small toy validating whether the file hierarchy (info.toml and exercises/) can be accepted by rustlings, and the reason for providing it is that we need a Cargo.toml file in the root directory {self, containing a(n invalid) dependency to rustlings original repo, which is warned by clippy. }