Pin rust nightly version

Works around https://github.com/rust-lang/rust/issues/111320.

.github/workflows/benchmarks.yml

@@ -15,8 +15,9 @@ jobs:
       uses: actions/checkout@v3
 
     - name: Install Rust
-      uses: dtolnay/rust-toolchain@nightly
+      uses: dtolnay/rust-toolchain@master
       with:
+        toolchain: nightly-2023-05-06
         components: rustfmt
 
     - name: Run Benchmarks

.github/workflows/ci.yml

@@ -327,8 +327,9 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@nightly
+        uses: dtolnay/rust-toolchain@master
         with:
+          toolchain: nightly-2023-05-06
           components: rustfmt
 
       - name: Cargo fmt
@@ -363,8 +364,9 @@ jobs:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@nightly
+        uses: dtolnay/rust-toolchain@master
         with:
+          toolchain: nightly-2023-05-06
           components: clippy
 
       - name: Load cache

.github/workflows/documentation.yml

@@ -20,7 +20,9 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@nightly
+        uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: nightly-2023-05-06
 
       - name: Install Node.js
         uses: actions/setup-node@v3

.github/workflows/release-crypto-nodejs.yml

@@ -78,8 +78,9 @@ jobs:
       - uses: actions/checkout@v3
         if: "${{ !inputs.tag }}"
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@nightly
+        uses: dtolnay/rust-toolchain@master
         with:
+          toolchain: nightly-2023-05-06
           targets: ${{ matrix.target }}
       - name: Install Node.js
         uses: actions/setup-node@v3
@@ -114,7 +115,9 @@ jobs:
       - uses: actions/checkout@v3
         if: "${{ !inputs.tag }}"
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@nightly
+        uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: nightly-2023-05-06
       - name: Install Node.js
         uses: actions/setup-node@v3
       - name: Build lib