Preliminary tracing

[jwodder]

Part of #5.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 34 lines in your changes missing coverage. Please review.

Project coverage is 30.36%. Comparing base (55162a6) to head (db618a3).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
src/main.rs	0.00%	24 Missing ⚠️
src/s3/mod.rs	0.00%	8 Missing ⚠️
src/syncer.rs	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #28      +/-   ##
==========================================
+ Coverage   28.90%   30.36%   +1.46%     
==========================================
  Files          13       13              
  Lines         768      731      -37     
==========================================
  Hits          222      222              
+ Misses        546      509      -37     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

---

🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests