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chore: speedup semver check using shared target directory #26598

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Merged
neilconway merged 1 commit into from
Oct 23, 2026
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chore: speedup semver check using shared target directory #26598

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10 changes: 9 additions & 1 deletion ci/scripts/changed_crates.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -74,7 +74,15 @@ cmd_semver_check() {
args+=(--package "$pkg")
done

cargo semver-checks --baseline-rev "$base_ref" "${args[@]}"
# cargo-semver-checks builds the rustdoc for each crate, current and
# baseline, in a separate placeholder project. Each project has its own
# target directory unless CARGO_TARGET_DIR is set, so a shared directory
# lets those builds reuse the compiled dependencies.
local target_dir
target_dir=$(cargo metadata --no-deps --format-version 1 | jq -r .target_directory)

CARGO_TARGET_DIR="${target_dir}/semver-checks-shared" \
cargo semver-checks --baseline-rev "$base_ref" "${args[@]}"
}

# ── main ────────────────────────────────────────────────────────────
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