message: Also install rustfmt
diff: @@ -4,6 +4,11 @@ if [ "$CLIPPY" = "yes" ]; then
  rustup component add clippy-preview
  fi
  +if [ "$RUSTFMT" = "yes" ]; then
  + rustup component add rustfmt
  +fi
  +
  +
  if [ "$DOCS" = "yes" ]; then
  cargo install mdbook --no-default-features
  cargo install mdbook-linkcheck
  