Error Building Substrate contract Node(error[E0603]: module `group` is private) After switching Substrate dependencies to "polkadot-v0.9.23" [duplicate]

Question

So, I am trying to point all my dependencies on substrate contract node to the stable branch polkadot-v0.9.23

But I get these errors when i try compiling

error[E0603]: module `group` is private
   --> /Users/Damilare/.cargo/git/checkouts/substrate-7e08433d4c370a21/76522d7/frame/support/procedural/tools/src/syn_ext.rs:50:53
    |
50  |                 let syn::group::$name { token, content } = syn::group::$parse(input)?;
    |                                                                 ^^^^^ private module
    |
note: the module `group` is defined here
   --> /Users/Damilare/.cargo/registry/src/github.com-1ecc6299db9ec823/syn-1.0.98/src/lib.rs:304:1
    |
304 | mod group;
    | ^^^^^^^^^^

error[E0603]: module `group` is private
   --> /Users/Damilare/.cargo/git/checkouts/substrate-7e08433d4c370a21/76522d7/frame/support/procedural/tools/src/syn_ext.rs:50:14
    |
50  |                 let syn::group::$name { token, content } = syn::group::$parse(input)?;
    |                          ^^^^^ private module
    |
note: the module `group` is defined here
   --> /Users/Damilare/.cargo/registry/src/github.com-1ecc6299db9ec823/syn-1.0.98/src/lib.rs:304:1
    |
304 | mod group;
    | ^^^^^^^^^^

Answer 1

For better old version compatibility.

cargo update -p syn --precise 1.0.96

I'm on polkadot-v0.9.23 too. And I don't want to change my stable toolchain. This could be the best option.

Answer 2

I synchronized substrate-contracts-node with the latest Substrate yesterday. There were some minor changes necessary for the latest Substrate release. Could be that this solves your problem.

This is the toolchain which I used locally:

rustc 1.64.0-nightly (2643b1646 2022-07-27)

Could you try pointing the dependencies in there to the Polkadot release that you want to use?

If it doesn't work:

• What command are you executing for the build?
• What's your local toolchain?
• Are you using the latest HEAD of the substrate-contracts-node repository?

Answer 3

Have you tried changing the Rust compiler version using rustup command? That could fix your problem or maybe not