Merge PR #47 -- Avoid atty crate #15

	# We use `actions-rs` for most of our actions
	#
	# This file is for the main tests. clippy & rustfmt are seperate workflows
	#
	# It is mostly copied from slog-rs/slog
	on: [push, pull_request]
	name: Cargo Test

	env:
	CARGO_TERM_COLOR: always
	# has a history of occasional bugs (especially on old versions)
	#
	# the ci is free so we might as well use it ;)
	CARGO_INCREMENTAL: 0


	# Tested versions:
	# 1. stable
	# 2. nightly
	# 3. Minimum Supported Rust Version (MSRV)

	jobs:
	test:
	# Only run on PRs if the source branch is on someone else's repo
	if: ${{ github.event_name != 'pull_request' \|\| github.repository != github.event.pull_request.head.repo.full_name }}

	runs-on: ubuntu-latest
	strategy:
	fail-fast: false # Even if one job fails we still want to see the other ones
	matrix:
	# 1.63 is MSRV. Keep in sync with Cargo.toml
	rust: [1.63, stable, nightly]
	# NOTE: Features to test must be specified manually. They are applied to all versions seperately.
	#
	# This has the advantage of being more flexibile and thorough
	# This has the disadvantage of being more vebrose
	#
	# Specific feature combos can be overriden per-version with 'include' and 'exclude'
	features: ["", "nested-values"]

	steps:
	- uses: actions/checkout@v2
	- uses: actions-rs/toolchain@v1
	with:
	toolchain: ${{ matrix.rust }}
	override: true
	# NOTE: We only run `cargo test`. No need for a seperate `cargo check`
	- name: Test
	run: \|
	# Pin a time version with a compatible MSRV
	cargo update --package time --precise 0.3.20
	cargo test --locked --verbose --features "${{ matrix.features }}"

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