Unable to compile examples about winterfell

[irakliyk]

do you know when we can expect the next release?

Hopefully in the next 4 weeks or so. Not sure if full support for RAPs will be there by then, but I'm hoping to get at least #58 included.

[Nashtare]

I am commenting here though I am not the author of the library. I believe this comes from the toolchain upgrade from 1.52.0 to 1.53.0. Which one are you using in your example above? Setting it to 1.53.0 or higher should be enough to make it compile.
Maybe adding a rust-toolchain file or specifying the supported ones in the README would be nice?

[vikulin]

I used following version:
$ rustc --version
rustc 1.52.1 (9bc8c42bb 2021-05-09)

[irakliyk]

Hi @vikulin - thank you for the question!

As @Nashtare pointed out above, the issue is with the compiler version. For best results, the following compilers should be used:

• For Winterfell v0.1: rustc 1.53
• For Winterfell v0.2: rustc 1.54

@Nashtare - we are planning to move to Rust 2021 with the next release, and I believe there it should be possible to specify minimum rustc version in Cargo.toml directly. Do you think that would be sufficient?

[Nashtare]

@irakliyk I didn't know they were planning to integrate this feature directly in the Cargo.toml file! I guess that will be enough then, do you know when we can expect the next release? After RAPs are integrated?

[irakliyk]

Closing this out since v0.3 published today specifies rustc version required in Cargo.toml files.