fix(ci): switch tarpaulin to LLVM engine to fix coverage failures#390
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fix(ci): switch tarpaulin to LLVM engine to fix coverage failures#390
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Tarpaulin's default ptrace engine causes spurious "Test failed during run" / segfault errors despite all tests passing. Switch to --engine llvm which uses LLVM source-based coverage instrumentation and is more reliable. https://claude.ai/code/session_011FySEMjapdhpDe8yGLMRZz
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Summary
--engine llvmfor reliable coverage collectionllvm-tools-previewrustup component required by the LLVM engineRoot cause
Tarpaulin's ptrace engine causes spurious failures:
Error: "Test failed during run"after all 1067 tests passA segfault occurred while executing testsduring ptrace tracingThe LLVM source-based coverage engine avoids all ptrace-related issues and was verified locally (73.40% coverage, all tests pass).
Test plan
--engine llvmworks locally with full test suite