Merge pull request #1670 from rust-lang/ci-cache

CI: add cache to more workflows

Author: Kobzol

.github/workflows/ci.yml

@@ -136,6 +136,8 @@ jobs:
       - name: Install servo dependencies
         run: sudo apt-get install -y llvm-dev clang libx11-dev python2.7 autoconf2.13 libjemalloc-dev
 
+      - uses: Swatinem/rust-cache@v2
+
       - name: Build collector
         run: cargo build -p collector
 
@@ -168,6 +170,8 @@ jobs:
           sudo apt-get install -y linux-tools-common linux-tools-generic linux-tools-`uname -r`
           echo -1 | sudo tee /proc/sys/kernel/perf_event_paranoid
 
+      - uses: Swatinem/rust-cache@v2
+
       - name: Build collector
         run: cargo build -p collector
 
@@ -205,6 +209,8 @@ jobs:
           make install
           echo "${PWD}/build/bin" >> $GITHUB_PATH
 
+      - uses: Swatinem/rust-cache@v2
+
       - name: Install profilers
         run: cargo install --version 0.4.12 cargo-llvm-lines
 
@@ -255,6 +261,8 @@ jobs:
         with:
           toolchain: stable
 
+      - uses: Swatinem/rust-cache@v2
+
       - name: Build site
         run: cargo build --bin site