Add another Miri-detected bug to README.md

Miri detected this bug in Mockall: https://github.com/asomers/mockall/issues/647

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Alan Somers 2025-04-03 11:02:45 -06:00 committed by GitHub
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@ -565,6 +565,7 @@ Definite bugs found:
* [Occasional memory leak in `std::mpsc` channels](https://github.com/rust-lang/rust/issues/121582) (original code in [crossbeam](https://github.com/crossbeam-rs/crossbeam/pull/1084))
* [Weak-memory-induced memory leak in Windows thread-local storage](https://github.com/rust-lang/rust/pull/124281)
* [A bug in the new `RwLock::downgrade` implementation](https://rust-lang.zulipchat.com/#narrow/channel/269128-miri/topic/Miri.20error.20library.20test) (caught by Miri before it landed in the Rust repo)
* [Mockall reads unintialized memory when mocking `std::io::Read::read`, even if all expectations are satisfied](https://github.com/asomers/mockall/issues/647) (caught by Miri running Tokio's test suite)
Violations of [Stacked Borrows] found that are likely bugs (but Stacked Borrows is currently just an experiment):