build: bump sevenz-rust2 to 0.21.5 - #552
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Pulls in a batched AES-CBC block decryption improvement in sevenz-rust2, and transitively bumps lzma-rust2 to 0.19.0, which carries the 0.18.1 out-of-bounds LZ encoder fix. Both crates' affected code paths are currently unreachable in exarch-core, so this is a forward-looking hardening bump rather than an observable behavior change. Closes #548
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August 18, 2026 18:24
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Summary
sevenz-rust20.21.4 -> 0.21.5 (batched AES-CBC block decryption, a 7z-extraction perf improvement on AES-encrypted archives)lzma-rust20.18.0 -> 0.19.0, which carries the 0.18.1 out-of-bounds LZ encoder fix (upstream release: v0.2.8 #107); the 0.19.0 minor bump itself adds sans-I/O LZMA1/LZIP decoders (upstream chore: bump dorny/paths-filter from 3 to 4 #109)Cargo.toml'ssevenz-rust2 = "0.21.4"caret requirement already admits 0.21.5, so the manifest floor is left as-isexarch-core: every 7z call site usesPassword::empty()(encrypted archives are rejected before decryption), and 7z archive creation is unsupported (solzma-rust2's encoder surface is dormant) — this is a forward-looking hardening bump, not an observable behavior changecargo auditandcargo deny checkare cleanTest plan
cargo build --workspace --all-features(excluding exarch-python's pre-existing, unrelated pyo3 linker issue)cargo nextest run --workspace --all-features --exclude exarch-python --exclude exarch-node— 1229 passed, 0 failedcargo test --doc --workspace --all-features --exclude exarch-python --exclude exarch-node— 117 passed, 0 failedcargo +nightly fmt --all -- --checkcargo clippy --workspace --all-targets --all-features -- -D warningsRUSTDOCFLAGS="-D warnings" cargo doc --no-deps --all-features --workspacecargo audit/cargo deny check— cleanPasswordRequiredCloses #548