feat: 4th attempt at caching

Author: blitss

.github/workflows/ci.yaml

@@ -66,7 +66,6 @@ jobs:
             strace \
             zlib1g-dev
           echo ""
-          ./ci/rustup.sh
           echo "----- Set up cross compilation -----"
           sudo apt-get install -y --fix-missing crossbuild-essential-arm64
           echo 'CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc' >> $GITHUB_ENV