Compiling error

[francoisschwarzentruber]

Hello,
your program seems nice but it does not compile. I just run cargo build which seems the standard method to compile in Rust (I am not a specialist of Rust at all) and I get:

error[E0658]: let...else statements are unstable
--> src/lib.rs:243:9
|
243 | / let Some(Step { node, backtracking }) = self.step_stack.pop() else {
244 | | return None;
245 | | };
| |__________^
|
= note: see issue #87335 rust-lang/rust#87335 for more information

For more information about this error, try rustc --explain E0658.

It seems that let...elseis not a standard feature.

Two ways to go:

• either the program has to be corrected to comply the standard
• or the README.md should explain what to do

Thank you!

[urholaukkarinen]

Which version of Rust do you have? The let-else syntax was added to stable Rust in version 1.65 (Nov. 3, 2022).

[urholaukkarinen]

Closing this. Feel free to re-open if the problem did not resolve