dial9-tokio-telemetry-v0.3.9

Added

• Instrumented JoinSets and other custom spawns via spawn_with (#392)
• Android schedstat support (#395) — thanks @nickrobinson!

Fixed

• Recover from missing .active file during rotation (#399): if the active trace file or parent directory is removed externally, the writer now recovers gracefully instead of busy-looping.
• Bring back old API on core telemetry builder (#401)
• Rate-limit log when drain is failing (#385)
• (toolkit) Don't pass directory progress callbacks for single-file analyzeTraces (#384)
• (test) Make test_schedstat_fd_closed_on_thread_exit not flaky (#398)
• Install pipeline when CPU profiling is enabled (#404)

Other

• Symposium cleanup (#394)
• Update README (#391)