fix: cargo clippy and audit errors in rust 1.63 (ChainSafe#275)

Author: hanabi1224

.github/workflows/build-and-test.yml

@@ -8,6 +8,8 @@ name: CI
 env:
   # https://doc.rust-lang.org/cargo/reference/profiles.html#incremental
   CARGO_INCREMENTAL: 1
+  CI: 1
+  RUST_VERSION: 1.63.0
   # Investigate why it does not build with this flag
   # RUSTFLAGS: -Ctarget-cpu=native
 
@@ -32,7 +34,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: stable
+          toolchain: ${{ env.RUST_VERSION }}
           components: rustfmt
           target: wasm32-unknown-unknown
           override: true
@@ -82,7 +84,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: stable
+          toolchain: ${{ env.RUST_VERSION }}
           components: clippy
           override: true
       # `cargo check` compiles the packages without performing the final step of code generation,
@@ -156,7 +158,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: stable
+          toolchain: ${{ env.RUST_VERSION }}
           components: clippy
           target: wasm32-unknown-unknown
           override: true
@@ -205,7 +207,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: stable
+          toolchain: ${{ env.RUST_VERSION }}
           components: clippy
           target: wasm32-unknown-unknown
           override: true
@@ -251,7 +253,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: stable
+          toolchain: ${{ env.RUST_VERSION }}
           override: true
           components: llvm-tools-preview
       - uses: taiki-e/install-action@cargo-llvm-cov