Stage 1.13: Compiler Messages

Compiler messages in Rust are really helpful and informative in most cases. The Rust team and the contributors are constantly improving the messages.

Compiler messages consists of 4 parts:

• A short error message, sometimes with an error code, e. g. error[E0277]: `Foo` doesn't implement `Debug`
• The code part, which is colorful and with underlines
• An optional help block which provides solutions, which you can sometimes just copy & paste
• An optional further information message, e. g. For more information about this error, try `rustc --explain E0277`

Run the code from the Rust Playground and read the Standard Error block.

You can actually copy & paste the provided help to get your program working as expected.
After it, your programm will look like this.

Further information:

• https://doc.rust-lang.org/error-index.html