Re-introduced semaphore to limit concurrent connections #186

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	name: CI

	jobs:
	ci:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	rust:
	- 1.78.0 # MSRV

	steps:
	- name: Checkout
	uses: actions/checkout@v3

	- name: Cache
	uses: actions/cache@v3
	with:
	path: \|
	~/.cargo/registry
	~/.cargo/git
	target
	key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}

	- name: Rust toolchain
	uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: stable
	override: true
	components: rustfmt, clippy

	- uses: davidB/rust-cargo-make@v1
	- uses: taiki-e/install-action@nextest

	- name: Formatting
	run: cargo make fmt

	- name: Clippy
	run: cargo make clippy

	- name: Build
	run: cargo make build

	- name: Tests
	run: cargo make test
	env:
	RUST_BACKTRACE: 1

Provide feedback