* Upgrade our github actions to "node16" Each github actions run has a lot of warnings about using node12 so this upgrades our repository to using node16. I'm hoping no other changes are needed and I suspect other actions we're using are on node12 and will need further updates, but this should help pin down what's remaining. * Update `actions/checkout` workflow to `v3` * Update to `actions/cache@v3` * Update to `actions/upload-artifact@v3` * Drop usage of `actions-rs/toolchain` * Update to `actions/setup-python@v4` * Update mdbook version
install-rust
A small github action to install rustup and a Rust toolchain. This is
generally expressed inline, but it was repeated enough in this repository it
seemed worthwhile to extract.
Some gotchas:
- Can't
--self-updateon Windows due to permission errors (a bug in Github Actions) rustupisn't installed on macOS (a bug in Github Actions)
When the above are fixed we should delete this action and just use this inline:
- run: rustup update $toolchain && rustup default $toolchain
shell: bash