refactor!: make tracing feature opt-in instead of default - #12
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The `tracing` feature (which pulls in `tracing`, `tracing-opentelemetry`, and `opentelemetry` crates) is now opt-in rather than included by default. This reduces compile times and dependency count for users who don't need OpenTelemetry trace/span capture. Users who rely on automatic OTel context propagation should add `features = ["tracing"]` to their aerro dependency. BREAKING CHANGE: `tracing` is no longer in the default feature set. Add `features = ["tracing"]` to restore previous behavior. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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May 26, 2026
The `tracing` feature (which pulls in `tracing`, `tracing-opentelemetry`, and `opentelemetry` crates) is now opt-in rather than included by default. This reduces compile times and dependency count for users who don't need OpenTelemetry trace/span capture. Users who rely on automatic OTel context propagation should add `features = ["tracing"]` to their aerro dependency. BREAKING CHANGE: `tracing` is no longer in the default feature set. Add `features = ["tracing"]` to restore previous behavior. Co-authored-by: ae2rs <ae2rs@users.noreply.github.com>
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Summary
tracingfrom the default feature set incrates/aerro/Cargo.toml— default is now["macro"]onlylib.rsandREADME.mdto reflect the new defaultMotivation
The
tracingfeature pulls in three additional crates (tracing,tracing-opentelemetry,opentelemetry) that many users don't need. Making it opt-in reduces default compile times and dependency count. Thetrace.rsmodule is already properly feature-gated with#[cfg(feature = "tracing")], so this change requires no code modifications — only Cargo.toml and docs.Migration
Add
features = ["tracing"]to your aerro dependency if you rely on automatic OTel trace/span context capture:Test plan
cargo test— all 52 tests pass with default features (no tracing)cargo test --features tracing— all 52 tests pass with tracing enabledcargo clippy --workspace --all-targets— zero warnings🤖 Generated with Claude Code