Bump tokio from 1.39.3 to 1.40.0 #526

	name: Cargo checks

	on:
	pull_request:
	push:
	branches:
	- main

	jobs:
	cargo-checks:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/[email protected]
	- name: setup rust toolchain
	run: rustup show
	- name: install rust toolchain components
	run: rustup component add rustfmt clippy
	- name: Check formatting
	run: cargo fmt --all -- --check
	- name: Clippy
	run: cargo clippy --all
	- name: build docker image
	run: docker build docker -t ponylang-playpen
	- name: Cargo test
	run: cargo test --all -- --nocapture

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