Update the Rust toolchain to nightly-2023-08-22.
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The semantics of int-to-pointer casts under strict provenance has changed. Ideally, we would update our `From<usize> for Register` implementation to use the `sptr` crate, but `sptr` does not currently have a suitable license. There is a [PR](Gankra/sptr#14) to change that, but it hasn't gotten a response in 7 months, so I don't think we can use it. Instead, this copies the implementation of `core::ptr::invalid`. This also bumps our `thiserror` dependency, which forces Cargo to pick a newer version of `proc-macro2` that is compatible with recently nightly toolchains.
jrvanwhy
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upkeep
lschuermann
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Aug 22, 2023
bradjc
approved these changes
Aug 23, 2023
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The semantics of int-to-pointer casts under strict provenance has changed. Ideally, we would update our
From<usize> for Registerimplementation to use thesptrcrate, butsptrdoes not currently have a suitable license. There is a PR to change that, but it hasn't gotten a response in 7 months, so I don't think we can use it. Instead, this copies the implementation ofcore::ptr::invalid.This also bumps our
thiserrordependency, which forces Cargo to pick a newer version ofproc-macro2that is compatible with recently nightly toolchains.