chore(rust_common): parallelize rustfmt script
find kythe/rust/ tools/rust/ -name '*.rs' -not -wholename "*target/*" -not -wholename "*rust/*/testdata/*" -print0 | while read -r -d $'\0' f
do
echo "Formatting $f";
- rustfmt --config-path "$(dirname "${BASH_SOURCE[0]}")" "$@" "$f";
+ rustfmt --config-path "$(dirname "${BASH_SOURCE[0]}")" "$@" "$f" &
done
+wait
