chore: backport roughly a year's worth of changes #4757

Workflow file for this run

	name: CI

	on:
	push:
	branches:
	- master
	- "v0.1.x"
	pull_request: {}

	env:
	# Disable incremental compilation.
	#
	# Incremental compilation is useful as part of an edit-build-test-edit cycle,
	# as it lets the compiler avoid recompiling code that hasn't changed. However,
	# on CI, we're not making small edits; we're almost always building the entire
	# project from scratch. Thus, incremental compilation on CI actually
	# introduces additional overhead to support making future builds
	# faster...but no future builds will ever occur in any given CI environment.
	#
	# See https://matklad.github.io/2021/09/04/fast-rust-builds.html#ci-workflow
	# for details.
	CARGO_INCREMENTAL: 0
	# Allow more retries for network requests in cargo (downloading crates) and
	# rustup (installing toolchains). This should help to reduce flaky CI failures
	# from transient network timeouts or other issues.
	CARGO_NET_RETRY: 10
	RUSTUP_MAX_RETRIES: 10
	# Don't emit giant backtraces in the CI logs.
	RUST_BACKTRACE: short
	MSRV: 1.49.0
	# TODO: remove this once tracing's MSRV is bumped.
	APPENDER_MSRV: 1.53.0

	jobs:
	### check jobs ###

	check:
	# Run `cargo check` first to ensure that the pushed code at least compiles.
	name: cargo check
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	profile: minimal
	override: true
	- name: Check
	uses: actions-rs/cargo@v1
	with:
	command: check
	args: --all --tests --benches

	style:
	# Check style.
	name: cargo fmt
	needs: check
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	components: rustfmt
	profile: minimal
	override: true
	- name: rustfmt
	uses: actions-rs/cargo@v1
	with:
	command: fmt
	args: --all -- --check

	warnings:
	# Check for any warnings. This is informational and thus is allowed to fail.
	runs-on: ubuntu-latest
	needs: check
	steps:
	- uses: actions/checkout@v3
	- uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	components: clippy
	profile: minimal
	- name: Clippy
	uses: actions-rs/clippy-check@v1
	with:
	token: ${{ secrets.GITHUB_TOKEN }}
	args: --all --examples --tests --benches -- -D warnings

	minimal-versions:
	# Check for minimal-versions errors where a dependency is too
	# underconstrained to build on the minimal supported version of all
	# dependencies in the dependency graph.
	name: cargo check (-Zminimal-versions)
	needs: check
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: actions-rs/toolchain@v1
	with:
	toolchain: nightly
	profile: minimal
	override: true
	- name: install cargo-hack
	uses: taiki-e/install-action@cargo-hack
	- name: "check --all-features -Z minimal-versions"
	run: \|
	# Remove dev-dependencies from Cargo.toml to prevent the next `cargo update`
	# from determining minimal versions based on dev-dependencies.
	cargo hack --remove-dev-deps --workspace
	# Update Cargo.lock to minimal version dependencies.
	cargo update -Z minimal-versions
	cargo hack check \
	--package tracing \
	--package tracing-core \
	--package tracing-subscriber \
	--all-features --ignore-private

	cargo-hack:
	needs: check
	name: cargo check (feature combinations)
	runs-on: ubuntu-latest
	strategy:
	matrix:
	# cargo hack --feature-powerset will have a significant permutation
	# number, we can't just use --all as it increases the runtime
	# further than what we would like to
	subcrate:
	- tracing-attributes
	- tracing-core
	- tracing-futures
	- tracing-log
	- tracing-macros
	- tracing-serde
	- tracing-tower
	- tracing
	- tracing-subscriber
	steps:
	- uses: actions/checkout@v3
	- uses: dtolnay/rust-toolchain@stable
	- name: install cargo-hack
	uses: taiki-e/install-action@cargo-hack
	- name: cargo hack check
	working-directory: ${{ matrix.subcrate }}
	# tracing and tracing-subscriber have too many features to be checked by
	# cargo-hack --feature-powerset with all features in the powerset, so
	# exclude some
	run: \|
	CARGO_HACK=(cargo hack check --feature-powerset --no-dev-deps)
	case "${{ matrix.subcrate }}" in
	tracing)
	EXCLUDE_FEATURES=(
	max_level_off max_level_error max_level_warn max_level_info
	max_level_debug max_level_trace release_max_level_off
	release_max_level_error release_max_level_warn
	release_max_level_info release_max_level_debug
	release_max_level_trace
	)
	${CARGO_HACK[@]} --exclude-features "${EXCLUDE_FEATURES[*]}"
	;;
	tracing-subscriber)
	INCLUDE_FEATURES=(fmt ansi json registry env-filter)
	${CARGO_HACK[@]} --include-features "${INCLUDE_FEATURES[*]}"
	;;
	*)
	${CARGO_HACK[@]}
	;;
	esac
	shell: bash

	check-msrv:
	# Run `cargo check` on our minimum supported Rust version (1.56.0). This
	# checks with minimal versions; maximal versions are checked above.
	name: "cargo check (+MSRV -Zminimal-versions)"
	needs: check
	runs-on: ubuntu-latest
	strategy:
	matrix:
	# cargo hack --feature-powerset will have a significant permutation
	# number, we can't just use --all as it increases the runtime
	# further than what we would like to
	subcrate:
	- tracing-appender
	- tracing-attributes
	- tracing-core
	- tracing-futures
	- tracing-log
	- tracing-macros
	- tracing-serde
	- tracing-subscriber
	- tracing-tower
	- tracing
	toolchain:
	- 1.56.0
	- stable
	steps:
	- uses: actions/checkout@v3
	- name: "install Rust ${{ env.APPENDER_MSRV }}"
	uses: actions-rs/toolchain@v1
	with:
	toolchain: ${{ env.APPENDER_MSRV }}
	profile: minimal
	- name: "install Rust nightly"
	uses: actions-rs/toolchain@v1
	with:
	toolchain: nightly
	profile: minimal
	- name: Select minimal versions
	uses: actions-rs/cargo@v1
	with:
	command: update
	args: -Z minimal-versions
	toolchain: nightly
	- name: Check
	uses: actions-rs/cargo@v1
	with:
	command: check
	args: --all-features --locked -p tracing-appender
	toolchain: ${{ env.APPENDER_MSRV }}

	### test jobs #############################################################

	test:
	# Test against stable Rust across macOS, Windows, and Linux, and against
	# beta and nightly rust on Ubuntu.
	name: "cargo test (${{ matrix.rust }} on ${{ matrix.os }})"
	needs: check
	strategy:
	matrix:
	# test all Rust versions on ubuntu-latest
	os: [ubuntu-latest]
	rust: [stable, beta, nightly]
	# test stable Rust on Windows and MacOS as well
	include:
	- rust: stable
	os: windows-latest
	- rust: stable
	os: macos-latest
	fail-fast: false
	runs-on: ${{ matrix.os }}
	steps:
	- uses: actions/checkout@v3
	- uses: actions-rs/toolchain@v1
	with:
	toolchain: ${{ matrix.rust }}
	profile: minimal
	override: true
	- name: install cargo-nextest
	uses: taiki-e/install-action@nextest
	- name: Run tests
	run: cargo nextest run --profile ci --workspace
	# TODO(eliza): punt on this for now because the generated JUnit report is
	# missing some fields that this action needs to give good output.
	# - name: Publish Test Report
	# uses: mikepenz/action-junit-report@v3
	# if: always() # always run even if the previous step fails
	# with:
	# report_paths: 'target/nextest/ci/junit.xml'
	# check_name: "cargo test (Rust ${{ matrix.rust }} on ${{ matrix.os }})"
	# check_title_template: "{{SUITE_NAME}}::{{TEST_NAME}}"
	- name: Run doctests
	run: cargo test --doc --workspace

	test-build-wasm:
	name: build tests (wasm)
	needs: check
	runs-on: ubuntu-latest
	strategy:
	matrix:
	# TODO(securityinsanity): slowly add wasm32 test runner to each crate, and move to seperate actions that run tests.
	subcrate:
	- tracing-appender
	- tracing-attributes
	- tracing-core
	- tracing-error
	- tracing-flame
	- tracing-journald
	- tracing-log
	- tracing-macros
	- tracing-serde
	- tracing-subscriber
	- tracing-tower
	fail-fast: false
	steps:
	- uses: actions/checkout@v3
	- uses: actions-rs/toolchain@v1
	with:
	target: wasm32-unknown-unknown
	toolchain: stable
	override: true
	- name: build all tests
	uses: actions-rs/cargo@v1
	with:
	command: test
	args: --no-run -p ${{ matrix.subcrate }}

	test-wasm:
	name: cargo test (wasm)
	needs: check
	runs-on: ubuntu-latest
	strategy:
	matrix:
	subcrate:
	- tracing
	steps:
	- uses: actions/checkout@v3
	- uses: actions-rs/toolchain@v1
	with:
	target: wasm32-unknown-unknown
	toolchain: stable
	override: true
	- name: install test runner for wasm
	uses: taiki-e/install-action@wasm-pack
	- name: run wasm tests
	run: cd ${{ matrix.subcrate }} && wasm-pack test --node

	test-features-stable:
	# Feature flag tests that run on stable Rust.
	# TODO(david): once tracing's MSRV goes up to Rust 1.51, we should be able to switch to
	# using cargo's V2 feature resolver (https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions)
	# and avoid cd'ing into each crate's directory.
	name: cargo test (feature-specific)
	needs: check
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	profile: minimal
	override: true
	- name: "Test log support"
	run: cargo test
	working-directory: "tracing/test-log-support"
	- name: "Test static max level"
	run: cargo test
	working-directory: "tracing/test_static_max_level_features"
	- name: "Test static max level (release)"
	run: cargo test --release
	working-directory: "tracing/test_static_max_level_features"
	- name: "Test tracing-core no-std support"
	run: cargo test --no-default-features
	working-directory: tracing-core
	- name: "Test tracing no-std support"
	run: cargo test --lib --no-default-features
	working-directory: tracing
	# this skips running doctests under the `--no-default-features` flag,
	# as rustdoc isn't aware of cargo's feature flags.
	- name: "Test tracing-subscriber no-std support"
	run: cargo test --lib --tests --no-default-features
	working-directory: tracing-subscriber
	- name: "Test tracing-subscriber with liballoc only"
	run: cargo test --lib --tests --no-default-features --features "alloc"
	working-directory: tracing-subscriber
	- name: "Test tracing-subscriber with no default features"
	run: cargo test --lib --tests --no-default-features --features "std"
	working-directory: tracing-subscriber

	# all required checks except for the main test run (which we only require
	# specific matrix combinations from)
	all_required:
	name: "all systems go!"
	runs-on: ubuntu-latest
	needs:
	- style
	- minimal-versions
	- cargo-hack
	- check-msrv
	- test-build-wasm
	- test-wasm
	- test-features-stable
	steps:
	- run: exit 0

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chore: backport roughly a year's worth of changes #4757

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chore: backport roughly a year's worth of changes #4757

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Workflow file for this run