chore: fix web build

.github/workflows/rust.yml

@@ -39,8 +39,9 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust nightly
-        uses: dtolnay/rust-toolchain@nightly
+        uses: dtolnay/rust-toolchain@master
         with:
+          toolchain: nightly-2026-10-31
           targets: wasm32-unknown-unknown
           components: llvm-tools-preview
 
@@ -51,4 +52,4 @@ jobs:
         env:
           CC_wasm32_unknown_unknown: clang
           AR_wasm32_unknown_unknown: llvm-ar
-        run: cargo +nightly check -p coop_web --target wasm32-unknown-unknown
+        run: cargo +nightly-2026-10-31 check -p coop_web --target wasm32-unknown-unknown

web/script/build-wasm.sh

@@ -21,12 +21,12 @@ if [[ "$1" == "--release" ]]; then
     echo -e "${YELLOW}Building in release mode${NC}"
 fi
 
-# wasm_thread requires a nightly compiler for its atomics features
-CARGO="cargo +nightly"
+NIGHTLY="nightly-2026-10-31"
+CARGO="cargo +$NIGHTLY"
 
 # Step 0: Toolchain prerequisites
 echo -e "${GREEN}Step 0: Checking toolchain...${NC}"
-rustup target add wasm32-unknown-unknown --toolchain nightly
+rustup target add wasm32-unknown-unknown --toolchain "$NIGHTLY"
 
 if [[ "$(uname)" == "Darwin" ]]; then
     # secp256k1-sys compiles C for wasm; Apple clang has the wasm32 target and
@@ -35,7 +35,7 @@ if [[ "$(uname)" == "Darwin" ]]; then
         echo -e "${RED}Apple clang not found. Install the Xcode command line tools: xcode-select --install${NC}"
         exit 1
     fi
-    rustup component add llvm-tools-preview --toolchain nightly
+    rustup component add llvm-tools-preview --toolchain "$NIGHTLY"
 
     RUSTUP_HOME=$(rustup show home)
     if [[ "$(uname -m)" == "arm64" ]]; then
@@ -43,7 +43,7 @@ if [[ "$(uname)" == "Darwin" ]]; then
     else
         HOST_ARCH="x86_64-apple-darwin"
     fi
-    LLVM_BIN="$RUSTUP_HOME/toolchains/nightly-$HOST_ARCH/lib/rustlib/$HOST_ARCH/bin"
+    LLVM_BIN="$RUSTUP_HOME/toolchains/$NIGHTLY-$HOST_ARCH/lib/rustlib/$HOST_ARCH/bin"
 
     export CC_wasm32_unknown_unknown=clang
     export AR_wasm32_unknown_unknown="$LLVM_BIN/llvm-ar"