Add misc debugging helpers and feature to poison dead memory #1933

	name: Minimal Supported Rust Version

	on:
	pull_request:
	branches:
	- master
	merge_group:
	branches:
	- master

	concurrency:
	# Cancels pending runs when a PR gets updated.
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true

	jobs:
	msrv:
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@v4

	# Show the Rust toolchain we are actually using
	- run: rustup show
	- run: cargo --version

	- name: Install cargo-msrv
	# The cargo-msrv tool sometimes requires a higher Rust version than our current rust-toolchain.
	run: cargo +stable install cargo-msrv
	# Verify the MSRV defined in Cargo.toml
	- name: Verify MSRV
	run: cargo msrv verify
	# If the previous step fails, find MSRV
	- name: Find MSRV
	if: failure()
	run: cargo msrv find

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