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#!/usr/bin/env bash## Script to install Rust for CI.## This script should be platform-agnostic (eg. no unix-only references like /dev/null). set -e # Define some control sequences for text formatting.red="\033[0;31m"reset="\033[0m" CI_FLAGS=""if [ "${GITHUB_ACTIONS}" == "true" ]; then  CI_FLAGS="-s -- -y"fi # Install Rust.if ! command -v cargo; then  echo "⬇️  Installing rust..."  curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh $CI_FLAGS  CARGO_ENV_FILE="$HOME/.cargo/env"  if [[ -f "$CARGO_ENV_FILE" ]]; then    source "$CARGO_ENV_FILE"  else    echo -e "⚠️  ${red}Please start a new terminal session so that cargo is in your PATH.${reset}"    exit 1  fifi