build-fix

Author: tgross35

ci/run-docker.sh

@@ -47,7 +47,8 @@ run() {
            "ci/docker/$target"
     docker run \
            --rm \
-           -e "RUSTFLAGS=${RUSTFLAGS:-}" \
+           -e RUST_COMPILER_RT_ROOT \
+           -e RUSTFLAGS \
            -e "CARGO_TARGET_DIR=/builtins-target" \
            -v "$(pwd):/checkout:ro" \
            -w /checkout \