Ancient version of rayon
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This crate came up during testing for rust-lang/rust#71274 as being affected by better detection of misuse of uninitialized memory. I think the reason is that the lockfile pins the dependency of rayon to the ancient version 1.0, which in turn depends on crossbeam-epoch 0.3, which contains many issues that have been fixed over the last 2 years.
Would be great if you could update your lockfile to make sure you get all those fixes. :) cargo update is all it should take.
Thank you for reaching out with an explanation of the problem. The project uses a very small subset of its dependencies, so thankfully, it was quite easy to even bump the versions in the Cargo.toml with only one code fix: b818a59
With this, the version of rayon is 1.4.0, and crossbeam-epoch is at 0.8.2, both of which seem to be their latest, so I'll consider the issue resolved for now. I've pushed a new version to crates.io as well.