build: debug info off by default for dev and test builds - #282
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Measured across this fleet on 2026-08-22: 22 GB / ~40 min with debug info vs 4.4 GB / ~10 min without, on the same tree. That was being carried as five `CARGO_PROFILE_*` environment variables every session had to know and remember, so a fresh clone, a CI runner, or a session that forgot all got the expensive build. `[profile.test]` inherits from `dev`, so this one entry covers `cargo build` and `cargo test` alike. lance-graph set the same default in its own manifest (#962); MedCare-rs followed today; this closes the same gap here. Verified it reaches the compiler rather than trusting manifest semantics: with no `CARGO_PROFILE_*` variables set, the rustc invocation carries `-C strip=debuginfo` and no `-C debuginfo=2`. Given up: line numbers in panic backtraces. `debug = "line-tables-only"` restores them at a fraction of full debug info when a debugging session needs them — a deliberate temporary edit, not a reason to keep the default expensive.
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Measured across this fleet on 2026-08-22: 22 GB / ~40 min with debug info vs 4.4 GB / ~10 min without, on the same tree.
That was being carried as five
CARGO_PROFILE_*environment variables every session had to know and remember — so a fresh clone, a CI runner, or a session that forgot all got the expensive build. A default belongs in the manifest, not in each session's environment.[profile.test]inherits fromdev, so this one entry coverscargo buildandcargo testalike. lance-graph set the same default in its own manifest (#962); MedCare-rs and OGAR followed today.Verified it reaches the compiler rather than trusting manifest semantics: with no
CARGO_PROFILE_*variables set, the rustc invocation forndarraycarries-C strip=debuginfoand no-C debuginfo=2.Given up: line numbers in panic backtraces.
debug = "line-tables-only"restores them at a fraction of full debug info when a debugging session needs them — a deliberate temporary edit, not a reason to keep the default expensive.Note: this repo's
rust-toolchain.tomlpins1.95.0, deliberately different from the 1.97.1 the rest of the fleet uses. Untouched.Generated by Claude Code