(#12) Add InnerPipe object + lots of coding #76

	name: Rust

	on:
	push:
	branches: [ main ]
	pull_request:
	types: [opened, synchronize, reopened, ready_for_review]

	env:
	CARGO_TERM_COLOR: always
	# Disable incremental compilation.
	#
	# Incremental compilation is useful as part of an edit-build-test-edit cycle,
	# as it lets the compiler avoid recompiling code that hasn't changed. However,
	# on CI, we're not making small edits; we're almost always building the entire
	# project from scratch. Thus, incremental compilation on CI actually
	# introduces additional overhead to support making future builds
	# faster...but no future builds will ever occur in any given CI environment.
	#
	# See https://matklad.github.io/2021/09/04/fast-rust-builds.html#ci-workflow
	# for details.
	CARGO_INCREMENTAL: 0
	# Allow more retries for network requests in cargo (downloading crates) and
	# rustup (installing toolchains). This should help to reduce flaky CI failures
	# from transient network timeouts or other issues.
	CARGO_NET_RETRY: 10
	RUSTUP_MAX_RETRIES: 10
	# Don't emit giant backtraces in the CI logs.
	RUST_BACKTRACE: short

	jobs:
	diff:
	runs-on: [ubuntu-latest]
	outputs:
	isRust: ${{ steps.diff.outputs.isRust }}
	steps:
	- uses: actions/checkout@v3
	- name: Detect Changes
	uses: './.github/actions/diffs'
	id: diff

	rustfmt:
	needs: diff
	if: needs.diff.outputs.isRust == 'true'
	runs-on: [ubuntu-latest]
	steps:
	- uses: actions/checkout@v3
	- uses: actions-rs/toolchain@v1
	with:
	components: rustfmt
	- name: rustfmt
	uses: actions-rs/cargo@v1
	with:
	command: fmt
	args: --all --check

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