Remove the thread pool from `future::Cache` #174

	name: Cargo Audit

	on:
	push:
	paths:
	- '**/Cargo.toml'
	- '**/Cargo.lock'
	schedule:
	# https://crontab.guru/
	- cron: '5 20 * * 5'

	jobs:
	audit:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout Moka
	uses: actions/checkout@v2

	- name: Install Rust toolchain (Nightly)
	uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: nightly
	override: true

	- uses: Swatinem/rust-cache@v1

	- name: cargo clean
	uses: actions-rs/cargo@v1
	with:
	command: clean

	- name: Check for known security vulnerabilities (Latest versions)
	uses: actions-rs/audit-check@v1
	with:
	token: ${{ secrets.GITHUB_TOKEN }}

	- name: Downgrade dependencies to minimal versions
	uses: actions-rs/cargo@v1
	with:
	command: update
	args: -Z minimal-versions

	- name: Check for known security vulnerabilities (Minimal versions)
	uses: actions-rs/audit-check@v1
	with:
	token: ${{ secrets.GITHUB_TOKEN }}

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