I realized just now that we haven't actually documented our usage of
`cargo vet` anywhere in our contributing documentation (or not that I
could find), so I decided to try and rectify that!
* Update Rust in CI to 1.72.0
* Update CI, tooling, and docs for MSRV
This commit codifies an MSRV policy for Wasmtime at "stable minus two"
meaning that the latest three releases of Rust will be supported. This
is enforced on CI with a full test suite job running on Linux x86_64
with the minimum supported Rust version. The full test suite will use
the latest stable version. A downside of this approach is that new
changes may break MSRV support on non-Linux or non-x86_64 platforms and
we won't know about it, but that's deemed a minor enough risk at this
time.
A minor fix is applied to Wasmtime's `Cargo.toml` to support Rust 1.70.0
instead of requiring Rust 1.71.0
* Fix installation of rust
* Scrape MSRV from Cargo.toml
* Cranelift is the same as Wasmtime's MSRV now, more words too
* Fix a typo
Alex Crichton
Nick Fitzgerald