Run if [[ ! -v CARGO_INCREMENTAL ]]; then
  if [[ ! -v CARGO_INCREMENTAL ]]; then
    echo "CARGO_INCREMENTAL=0" >> $GITHUB_ENV
  fi
  if [[ ! -v CARGO_PROFILE_DEV_DEBUG ]]; then
    echo "CARGO_PROFILE_DEV_DEBUG=0" >> $GITHUB_ENV
  fi
  if [[ ! -v CARGO_TERM_COLOR ]]; then
    echo "CARGO_TERM_COLOR=always" >> $GITHUB_ENV
  fi
  if [[ ! -v RUST_BACKTRACE ]]; then
    echo "RUST_BACKTRACE=short" >> $GITHUB_ENV
  fi
  if [[ ! -v RUSTFLAGS ]]; then
    echo "RUSTFLAGS=-D warnings" >> $GITHUB_ENV
  fi
  # Enable faster sparse index on nightly
  # The value is ignored on stable and causes no problems
  # https://internals.rust-lang.org/t/call-for-testing-cargo-sparse-registry/16862
  if [[ ! -v CARGO_UNSTABLE_SPARSE_REGISTRY ]]; then
    echo "CARGO_UNSTABLE_SPARSE_REGISTRY=true" >> $GITHUB_ENV
  fi
  shell: /bin/bash --noprofile --norc -e -o pipefail {0}
/Users/runner/work/_temp/<guid>.sh: line 1: conditional binary operator expected
Error: Process completed with exit code 2.