diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 7f434611e7b..055313d5733 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -105,11 +105,6 @@ jobs:
       - sre
     steps:
       - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-      - run: |
-          /home/runner/.cargo/bin/rustup component add llvm-tools-preview
       - name: Install cargo-llvm-cov
         run: curl -LsSf https://github.com/taiki-e/cargo-llvm-cov/releases/latest/download/cargo-llvm-cov-x86_64-unknown-linux-gnu.tar.gz | tar xzf - -C ~/.cargo/bin
       - name: Run Test (with coverage)