Add some docs on hints on dealing with varying tests.

rust-lang / cargo-bisect-rustc

Bisects rustc, either nightlies or CI artifacts

https://rust-lang.github.io/cargo-bisect-rustc/

Apache License 2.0

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Add some docs on hints on dealing with varying tests. #137

Closed ehuss closed 2 years ago

ehuss commented 2 years ago

I've run into a few cases where it has been difficult to narrow down a regression since it flip-flopped over time, or I picked a range that wasn't validating what I intended. I've notice a few people run into similar issues, so I figured I'd add some suggestions on how to deal with it.