compile error: failed to build substratekittes by following the workshop guide

[yutongp]

refer to: shawntabrizi/substrate-collectables-workshop#121

I was trying to follow the workshop(https://substrate.dev/substrate-collectables-workshop/#/0/running-a-custom-node)

but failed to build my substratekitten project:

cd substratekitties
./scripts/init.sh
./scripts/build.sh
Building webassembly binary in runtime/wasm...
   Compiling rustc_version v0.2.3
   Compiling quote v0.6.12
   Compiling toml v0.4.10
   Compiling hex-literal v0.1.3
error: proc-macro derive panicked
  --> /Users/yutong/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/hex-literal-0.1.3/src/lib.rs:38:1
   |
38 | / proc_macro_expr_decl! {
39 | |     /// Macro for converting hex string to byte array at compile time
40 | |     hex! => hex_impl
41 | | }
   | |_^
   |
   = help: message: assertion failed: `(left == right)`
             left: `Some("#[allow(unused,")`,
            right: `Some("#[allow(unused")`
   = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: aborting due to previous error

error: Could not compile `hex-literal`.
warning: build failed, waiting for other jobs to finish...
error: build failed

[bkchr]

Please search the next time, before opening a new issue. #3134