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

xtask/src/ci.rs

@@ -5,15 +5,16 @@ use xshell::{cmd, pushd};
 
 use crate::{build_docs, workspace, DenyWarnings, Result};
 
+const NIGHTLY: &str = "nightly-2023-05-06";
+const WASM_TIMEOUT_ENV_KEY: &str = "WASM_BINDGEN_TEST_TIMEOUT";
+const WASM_TIMEOUT_VALUE: &str = "120";
+
 #[derive(Args)]
 pub struct CiArgs {
     #[clap(subcommand)]
     cmd: Option<CiCommand>,
 }
 
-const WASM_TIMEOUT_ENV_KEY: &str = "WASM_BINDGEN_TEST_TIMEOUT";
-const WASM_TIMEOUT_VALUE: &str = "120";
-
 #[derive(Subcommand)]
 enum CiCommand {
     /// Check style
@@ -156,7 +157,7 @@ fn check_examples() -> Result<()> {
 }
 
 fn check_style() -> Result<()> {
-    cmd!("rustup run nightly cargo fmt -- --check").run()?;
+    cmd!("rustup run {NIGHTLY} cargo fmt -- --check").run()?;
     Ok(())
 }
 
@@ -168,9 +169,9 @@ fn check_typos() -> Result<()> {
 }
 
 fn check_clippy() -> Result<()> {
-    cmd!("rustup run nightly cargo clippy --all-targets -- -D warnings").run()?;
+    cmd!("rustup run {NIGHTLY} cargo clippy --all-targets -- -D warnings").run()?;
     cmd!(
-        "rustup run nightly cargo clippy --workspace --all-targets
+        "rustup run {NIGHTLY} cargo clippy --workspace --all-targets
             --exclude matrix-sdk-crypto --exclude xtask
             --no-default-features
             --features native-tls,experimental-sliding-sync,sso-login,experimental-timeline
@@ -178,7 +179,7 @@ fn check_clippy() -> Result<()> {
     )
     .run()?;
     cmd!(
-        "rustup run nightly cargo clippy --all-targets -p matrix-sdk-crypto
+        "rustup run {NIGHTLY} cargo clippy --all-targets -p matrix-sdk-crypto
             --no-default-features -- -D warnings"
     )
     .run()?;