install nightly before running burn-in with asan

Author: spacejam

.github/workflows/test.yml

@@ -103,6 +103,7 @@ jobs:
         path: |
           benchmarks/stress2/target
           benchmarks/stress2/Cargo.lock
+          ~/.rustup
         key: ${{ runner.os }}-${{ env.cache-name }}-${{ hashFiles('**/Cargo.toml') }}
     - name: burn in
       run: |
@@ -111,6 +112,9 @@ jobs:
         ulimit -c unlimited
         echo "$PWD/core-dumps/corefile-%e-%p-%t" | sudo tee /proc/sys/kernel/core_pattern
         mkdir core-dumps
+        rustup toolchain install nightly
+        rustup toolchain install nightly --component rust-src
+        rustup update
         rm -rf default.sled || true
         export RUSTFLAGS="-Z sanitizer=address"
         export ASAN_OPTIONS="detect_odr_violation=0"