Install rust nightly toolchain before run ASAN test

.github/workflows/ci.yml

@@ -250,16 +250,6 @@ jobs:
         with:
           crate: cross
 
-      # asan expects a binary at /usr/bin/llvm-symbolizer but GHA runners include
-      # multiple versioned binaries, like /usr/bin/llvm-symbolizer-13. This step
-      # finds the latest symbolizer and use it as the "base" llvm-symbolizer binary.
-      #
-      # llvm-symbolizer is necessary to get nice stack traces from asan errors. 
-      # Otherwise the stack trace just contains a hex address like "0x55bc6a28a9b6"
-      - name: set llvm symbolizer
-        run: |
-          sudo ln -s $(find /usr/bin/ -maxdepth 1 -name "llvm-symbolizer-*" | sort -V | tail -n 1) /usr/bin/llvm-symbolizer
-
       - uses: camshaft/rust-cache@v1
         with:
           key: ${{ matrix.target }}
@@ -282,11 +272,18 @@ jobs:
         run: |
           ${{ matrix.target != 'native' && 'cross' || 'cargo' }} test --workspace ${{ matrix.exclude }} ${{ matrix.target != 'native' && format('--target {0}', matrix.target) || '' }} ${{ matrix.args }}
 
+      - name: Install Nightly toolchain
+        id: toolchain
+        run: |
+          rustup toolchain install ${{ env.RUST_NIGHTLY_TOOLCHAIN }} --profile minimal
+          rustup override set ${{ env.RUST_NIGHTLY_TOOLCHAIN }}
+
       - name: Run Unit Tests under ASAN
         env:
           RUSTDOCFLAGS: -Zsanitizer=address
           RUSTFLAGS: -Zsanitizer=address
         run: |
+          sudo ln -s $(find /usr/bin/ -maxdepth 1 -name "llvm-symbolizer-*" | sort -V | tail -n 1) /usr/bin/llvm-symbolizer
           cargo test \
             -Zbuild-std \
             --manifest-path ${{ env.ROOT_PATH}}/Cargo.toml \