Setting `output_user_root` affects hashes

[kusaeva]

Hello!
We start using in our .bazelrc startup --output_user_root=/tmp-XXX and suddenly notice that this option affects hashes produced by bazel-diff.
I have already seen this comment about using --ignoredRuleHashingAttributes and tried running bazel-diff with --ignoredRuleHashingAttributes=location,path. But unfortunately it still produces different hashes for different output_user_root dirs.
How to figure out what attributes to add in this option to make bazel-diff's results consistent?
Thank you for any help!

[kusaeva]

Suddenly I realized this option expects space-separated attributes.
Tried `--ignoredRuleHashingAttributes="location path", it works.

IMHO it will be better to have consistent style for options FYI @tinder-maxwellelliott