Combine the WASM CI job with the others

There isn't any reason to be distinct here, and it would be better to
test with all feature configurations in run.sh anyway.

library/compiler-builtins/libm/.github/workflows/main.yml

@@ -9,7 +9,7 @@ env:
 
 jobs:
   test:
-    name: Docker
+    name: Build and test
     timeout-minutes: 20
     strategy:
       fail-fast: false
@@ -52,6 +52,9 @@ jobs:
           os: ubuntu-latest
         - target: x86_64-apple-darwin
           os: macos-13
+        - target: wasm32-unknown-unknown
+          os: ubuntu-latest
+          build_only: 1
         - target: i686-pc-windows-msvc
           os: windows-latest
         - target: x86_64-pc-windows-msvc
@@ -89,30 +92,19 @@ jobs:
 
     # Non-linux tests just use our raw script
     - name: Run locally
-      if: matrix.os != 'ubuntu-latest'
+      if: matrix.os != 'ubuntu-latest' || contains(matrix.target, 'wasm')
       shell: bash
       run: ./ci/run.sh ${{ matrix.target }}
 
     # Otherwise we use our docker containers to run builds
     - name: Run in Docker
-      if: matrix.os == 'ubuntu-latest'
+      if: matrix.os == 'ubuntu-latest' && !contains(matrix.target, 'wasm')
       run: |
         rustup target add x86_64-unknown-linux-musl
         cargo generate-lockfile && ./ci/run-docker.sh ${{ matrix.target }}
 
-  wasm:
-    name: WebAssembly
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@master
-    - name: Install Rust
-      run: rustup update nightly --no-self-update && rustup default nightly
-    - run: rustup target add wasm32-unknown-unknown
-    - uses: Swatinem/rust-cache@v2
-    - run: cargo build --target wasm32-unknown-unknown
-
   builtins:
-    name: "The compiler-builtins crate works"
+    name: Check use with compiler-builtins
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@master
@@ -164,7 +156,6 @@ jobs:
   success:
     needs:
       - test
-      - wasm
       - builtins
       - benchmarks
       - msrv

library/compiler-builtins/libm/ci/run.sh

@@ -55,7 +55,7 @@ if [ "${BUILD_ONLY:-}" = "1" ]; then
     $cmd
     $cmd --features "unstable-intrinsics"
 
-    echo "can't run tests on $target"
+    echo "can't run tests on $target; skipping"
 else
     cmd="cargo test --all --target $target $extra_flags"