unresolved imports `syn::FnArg`, `syn::ImplItem`, `syn::Item`

unresolved import `syn::ItemFn`

could not compile `worker-macros` (lib) due to 2 previous errors

The process '/home/runner/.cargo/bin/cargo' failed with exit code 101

The following actions uses node12 which is deprecated and will be forced to run on node16: actions-rs/[email protected], actions-rs/cargo@844f36862e911db73fe0815f00a4a2602c279505. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The following actions uses Node.js version which is deprecated and will be forced to run on node20: actions/checkout@v3, actions-rs/[email protected], actions-rs/cargo@844f36862e911db73fe0815f00a4a2602c279505. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

`/home/runner/work/mainmatter-website-mailer/mainmatter-website-mailer/.cargo/config` is deprecated in favor of `config.toml`