Improve logging infrastructure.

This enables logging in (some) tests, and allows disabling logging
at compile time with a crate-level feature flag.

Also adds tracing-subscriber as an optional dependency of CLI utilities.

.github/workflows/pull_request.yml

@@ -45,7 +45,13 @@ jobs:
  run: cargo fmt --all -- --check
 
  - name: Clippy
- run: cargo clippy --all-targets --all-features --tests --all -- -D warnings
+ run: cargo clippy --release --all-targets --all-features --tests --all -- -D warnings
+
+ - name: Clippy with default features
+ run: cargo clippy --release --all-targets --tests --all -- -D warnings
 
  - name: Run tests
- run: cargo test --all --no-fail-fast --all-features
+ run: cargo test --release --all --no-fail-fast --all-features
+
+ - name: Run tests with default features
+ run: cargo test --release --all --no-fail-fast

Cargo.toml

@@ -2,7 +2,7 @@
 debug = true
 
 [workspace]
-members = [ "jxl", "jxl_cli", "jxl_headers_derive"]
+members = ["jxl", "jxl_cli", "jxl_macros"]
 resolver = "2"
 
 [workspace.lints.clippy]

jxl/Cargo.toml

@@ -13,11 +13,12 @@ num-derive = "0.3"
 num-traits = "0.2.14"
 array-init = "2.0.0"
 half = "1.7.1"
-tracing = "0.1.40"
-jxl_headers_derive = { path = "../jxl_headers_derive" }
+tracing = { version = "0.1.40", optional = true }
+jxl_macros = { path = "../jxl_macros" }
 
 [dev-dependencies]
 arbtest = "0.3.1"
+test-log = { version = "0.2.16", features = ["trace"] }
 
 [features]
 debug_tools = []

jxl/src/container/mod.rs

@@ -117,6 +117,7 @@ impl ContainerParser {
 #[cfg(test)]
 mod test {
  use super::*;
+ use test_log::test;
 
  #[rustfmt::skip]
  const HEADER: &[u8] = &[