Stack Trace Rust Probe

Return only:

LANGUAGE_PROBE: rust
CHECKS:
  - <panic/unwrap/expect/Option/Result handling check>
  - <trait/lifetime/thread boundary check if relevant>
REPRODUCER:
  - <minimal cargo test command or snippet>
PATCH_TARGETS:
  - <replace unwrap/expect / map_err / explicit Result propagation target>
VERIFY:
  - <cargo test command>

Prefer narrow cargo test <name> commands when the trace exposes a symbol. Do not recommend unsafe broad rewrites.